Alpha Omega Ra – Ra-markably Exhilarating
Disclaimers
- The reviewed IEM is a borrowed personal unit. Regardless, all the opinions are original ideas, there is zero influence from any 3rd party or external opinions.
- No EQ or filter presets were used during the entire review period.
- Sound evaluation are kept neutral and does not include 3rd party accessories (ie; eartips, cable, reversible mods)
IntroductionAlpha Omega Custom In-Ear or better known as AO for short has enjoyed excellent spell during recent times, seeing brand new handcrafted models of custom in-ears rolling out of their production line. Entering midway during 2023 last year, AO has released four new models such as the Voyager, a collaboration project with Hillaudio Malaysia which I have covered last time. Next, was the Indomitus, followed by the continuation of their flagship sequel, Omegon MKII and lastly the latest one which I will be reviewing this time, is the Alpha Omega Ra. Every time AO released a brand new model, I cannot help myself being excited and eagerly anticipated to try out the models for myself.
Luckily, with the help of my audio buddies that I have met online, I was kindly offered to test and review the Alpha Omega Ra at my own comfort. Huge shout-out and appreciation for the kind offer. At the heart of this earpiece, AO has presented to us 7-drivers total of tribrid design for the Ra. Combining one beryllium plated dynamic-driver, 4 Sonion balanced armatures for its low-mid and midrange frequencies and lastly 2 Sonion electrostatic drivers for the treble feeded through an in-house developed 4-way passive crossover. While that may seem mouthful enough to say, this whole package comes with a price tag of only RM2668 or equivalent to US$563 (rounded-off). Hence, with that let’s get on with the review.
Unboxing Experience
Packaging of the Ra was minimal and straightforward, similar to most of AO offering in their catalog albeit midrange or flagship models. Presentation was overall basic whereby there is no such premium feature when compared to other brands. Nonetheless, what is more important is certainly what’s inside the package and the monitors itself. On the sleeve cover there is a branding logo on the front, a specification list and a diagram of the frequency response at the back. By sliding the sleeve either top or bottom unveils the main box.
Flipping the main box cover, unveils the monitor itself placed snug inside a thick foam cut out. As we explore further AO have included in the package, one custom made premium casing made from faux leather complemented with a well-padded velvet upholstery in the inside to store your monitors. Stored in the casing as well is the stock cable and 3 pairs of silicone eartips that what seems to be similar of AT07 eartips which comes in various sizes (S,M,L).
Cable
AO has certainly hit the nail on the head with the cable aesthetics, which further compliments the overall aesthetics of the Ra. In terms of the build and material, AO went to choose a 4 core, gold plated silver cable which, I reckon are SPC cables. Hands on experience using the cable was overall great, similarly to other AO monitors which I have tried in the past, such as the Lambda, Iota and Omegon MKI. The cable is insulated with a soft pliable yellowish PVC material which further radiates its golden charm. Braiding quality on this are neat and fairly secure, the connectors are made out of lightweight stainless steel. At the end of each 2-pin connectors, there are no such indication of “L” or “R” other than the plastic bit which holds the two tiny pins in red and clear.
Specifications
- Driver(s): 1 Beryllium Plated Dynamic-driver, 2 Sonion Low-mid BA, 2 Sonion Mid BA, 2 Sonion EST Drivers with 4-way Passive Crossover
- Impedance: 28 Ohms
- Sensitivity: 105dB/SPL
- Frequency Response: 10Hz-40kHz
- Cable: 4 core, gold plated silver cable, 2-pin (0.78mm) to 3.5mm connectors
Build and ComfortWith there are being so much drivers cramped inside the Ra, it is no surprise to see this monitor to have such large shell which are made with premium resin using a custom made universal mold. The motive chosen by AO to decorate this earpiece is inspired by galaxies or milky way given that the overall colour language were predominantly white with a touch of pinkish hue and golden glitters. Of course, customers can opt to add their own touch of creativity to design their own customized earpiece via personal consultation. But even for the universal variant, the artwork quality for Ra looks absolutely stunning and gorgeous.
One notable feature aspect that strikes me the most when inspecting the design for the Ra was the existence of large vent port on each side of the monitor, positioned next to the 2-pin connectors. Curious with my finding, I brought the matter into a discussion among audiophile buddies including Clement, the man behind Alpha Omega inside a small WhatsApp group chat. Little did I knew, my wild guess of the “secret sauce” was true, a similar feature of FIR Audio’s ATOM Venting technology. Which AO call it as Alpha Omega Proprietary Venting System that reduces pressure build up in a sealed ear canal, hence provides greater comfort, less ear fatigue and indirectly affects the overall bass delivery which I will further explain in sound evaluation.
The overall texture of the shell is smooth to the hand and polished. At the nozzle end however it was not quite refined as there are some unevenness when compared to other IEMs I tried recent times that shares similar build material. Even though comfort varies across users, I personally consider the design was very comfortable and ergonomic with an out sticking design on that acts like a supporting feature that naturally slides into my concha ensuring a snug and secure seal when using the IEM. The feather light build allows me to use the Ra comfortably, even for long hours. Analyzing inside of the earpieces, seeing all of the wiring are neat and professionally made albeit the inside cavity is apparently empty. Hence, it is best to not drop these gorgeous earpieces from tall height or onto hard surface since to avoid serious damage to the internal components.
Test Equipment
- Local Hi-Res files > Astell&Kern SE100 M.Chat (Linear Phase Fast Roll-off Filter)
- Tidal (Master) + Local Hi-Res files via Sony Music Centre > Sony Xperia 1 V (DSEE Ultimate + Dolby Atmos - OFF)
Power RequirementsWhen looking through the specification numbers, the Ra seems to be a friendly monitor to be driven directly through a smartphone. Although the case is true, this IEM does benefit from higher output number as greater dynamics can be achieved when properly amped.
Driving it straight from my Sony Xperia 1 V, I had to turn up the volume between 10-13/30 to achieve a comfortable listening experience. Plugging the Ra into my Astell&Kern SE100 on both balanced and unbalanced output requires me to turn the volume wheel up to 60-70/150 on unbalanced, meanwhile on balanced requires me to dial downwards to 50/150 at most.
Initial Impression
Frequency response for Ra, taken from Alpha Omega Official Instagram page.
Alpha Omega Ra is a mildly V-shaped pair of monitors that exudes warm, musical sound signature with prominent emphasis mainly in the sub-bass region. Approximately, the graph starts at least from +13dB in the 20Hz frequency which then gradually drops before 500Hz frequency. This results to a warm tonal balance, rich and coloured sound, however Ra does not sound weak at all in the higher frequencies. Upper-mids and top end of the frequencies are elevated a couple decibels shy below the bass shelf.
Moreover, pinna region on Ra is scooped out by a few decibels to keep preserve vocal naturalness which I appreciate the most. Past the 10kHz frequencies however, I could notice Ra fell short to present better than average treble extension even when compared to my dual-BA reference Audio Technica ATH-IM02. Regardless, the usage of EST in this earpiece, added with the vent ports fortunately, kept the Ra in the game because this IEM has tons of detail retrieval, good resolving treble and excellent airiness.
Low Frequency (Bass)
Being its most valuable asset and strongest attribute, Ra has an absurdly deep low rumbling bass and wide extension in the upper-bass to lower-mids. The elevated sub-bass produced by the single beryllium plated DD gives the Ra a powerful subwoofer effect, capable of rendering detailed textured low-bass without any sort of muddiness. While mid-bass and upper-bass delivery has moderate speed, bass slam resembles a thick yet airy “thud” sound rather than boomy, which was a false assessment. Each bass slam has an emphasized note weight and impact due to the boosted sub-bass, additionally bass decay and transients are slow and extended providing slightly above average depth reach from the loudest to the quietest of bass
Coming back to my earlier comment regarding the functionality of the large vent port on Ra, this similar feature to FIR Audio’s ATOM Venting system allows the Ra to produce not only the deep rumble sub-bass and keeping internal air pressure at bay, but it is also responsible for the natural dispersion for each bass slam. It can be quite difficult to explain it in words but a simple test you can do is by covering the vent ports with blu tacks or tape. From my own analysis, I could hear there was a noticeable amount of resonance within the chamber with the mid-bass hits with a slight more aggressive.
Middle Frequency (Mid)
Despite the Ra could be considered as a bass heavy and many might associate it to an overly warm, dark sound. It was not entirely the case with Ra, the lower-mids blends superbly with the excess upper-bass. That being said, the midrange handled by four Sonion balanced armature units are tuned slightly north to neutral in terms of tonal balance.
Moving into the 1kHz frequency and above, AO did a fairly stunning job to keep the midrange fairly forward, natural with excellent presence for such tuning without being overwhelmed by the heavy bass. In the upper-mids, Ra in my opinion has a proper pinna gain, which I reckon AO did manage to scoop a couple decibels from frequencies around 2k-3.5kHz without sacrificing detail within the midrange considering this is a smoother tuned monitor.
High Frequency (Treble)
Treble tuning of Ra has a decent amount of sparkle and energy which honestly I was expecting a bit more considering AO has opt for dual Sonion EST drivers. But either way, the treble was still crisp, very capable gushing out low and high level of detail. To add onto that as well, I also did test Ra with some of my sibilant test tracks and it performed wonderfully well to keep sibilant under radar.
However, treble extension was where I personally felt Ra was lacking, due to that instruments that is played at high frequencies does not feel quite realistic. Comparatively speaking, while I was swapping back and forth with my reference monitors, Audio Technica ATH-IM02. In summary, if you prioritize treble satisfaction then these may not suit you, but if you’re in the market for something with strong bass, high musicality and without losing detail, Ra does it exceptionally well.
TechnicalityFrom a technical perspective, soundstage on Ra was average at best. There was decent amount of width but in terms of height, it was surprisingly tall. Interesting enough, due to the exceptional level of airiness coming from the vent ports, I initially thought Ra has a wide soundstage until I went on and play a couple more tracks to confirm my evaluations. Spatial imaging was sligthy above average, it was quite accurate but not quite as good when compared to the likes of Etymotic Evo which unfortunately I could not compare thoroughly in this review. Regardless, Ra separates handles various elements playing simultaneously well even with busier tracks, it does not sound congested nor resulting to melding. Layering was average at best, due to the lack of depth some of the instruments and other elements included are pushed into the same row.
Although the tuning on Ra prioritizes smoothness and musicality, these does not felt lacking in detail. Macrodetails and small nuances are present yet not overdone, however the overall resolution was only as far as average. Lastly, wraping it off with the dynamic range test for Ra is rated at average. Utilizing the Ultimate Headphone Test - ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, Ra was able to produce an audible 5 out of 7 counts.
Comparison(s)
- Audio Technica ATH-IM02
Even from the graph one could tell that Ra is much bassier than the IM02 by a long shot, pretty much beats it easily in the bass department with ease. That being said, IM02 provides better resolution and overall cleaner bass response compared to Ra which has a slight bass bleed into the lower-mids. In the midrange and treble, is where the IM02 shines due to the differences in its tuning.
Upper-mids are much more forward, natural and analog sounding, however Ra handles midrange detail a tad better with blacker background. Treble on both monitors are similarly relaxing and very smooth. Unfortunately, as I mentioned about the lack of extension on Ra was also where the IM02 simply outshines it including other technical aspects such as detail resolution, dynamic range and soundstaging.
- Etymotic Evo
For this one, I have to do it by memory since I only manage to compare both of these side by side for less than 10 minutes. Hence, I will not go into detail regarding these two and only compare the attributes that I could recall. Most obviously when comparing both, soundstaging, detail retrieval and resolution on Evo was night and day clearly blows Ra out of the park.
Both monitors does go deep into the sub-bass, however Ra does a better job at definition and packs more weight but Evo handled texture a tad better and detailed. Midrange was obviously leaner with colder tonal balance on the Evo. Treble was much more exciting and crisper on Evo, while Ra had a fuller treble note. Both monitors have similar problems when it comes to treble extension, but Evo has a slight advantage over Ra.
Eartip Combination(s)
AO Ra with the provided stock pair of eartips which were used throughout the sound evaluation.
- E Pro EP00
One of my favourite pairing combination with the Ra, great increase in the midrange quality, vocals are much more forward with better clarity. Bass slam were tighter and controlled. Treble is a tad subdued but in return, it yields greater treble extension and much natural soundstage, airiness were not affected in any negative manner.
- Azla Xelastec
Also my favourites, sounds similar to the EP00 for most parts, although treble is much crisper, more sparkle and detail retrieval with these. Airiness stays similar but with soundstaging sounded a tad boxy. Provides much secure seal and requires less adjustment into the ear canal compared to EP00.
- Tangzu Tang Sancai (Balanced)
Sounds most balance with the Ra, bass slam feels woolly, rounded and immersive. Midrange is still recessed but brought slightly forward than stock.
- Triple Flange
Similar to Tang Sancai, kept most of the bass quantity. The difference between both is that triple flange sounds a tad tighter. Soundstaging however, was the narrowest out of the bunch, but instead you will get the best detail retrieval due to its being closer to eardrum.
- Dunu S&S
Decent combination, sounds similar to stock but with slightly much forward midrange. Treble were splashy unfortunately.
Purchasing Links and Where to GetAlpha Omega Official Website
https://www.alphaomegaciem.com/ra
ConclusionWhile I was sitting down and just take a moment to appreciate a sound signature that is north by miles away from my flat neutral preference. I could see how Ra would slot itself quite easily to those who would want an upgrade from for example, Thieaudio Hype 2 or such monitors that is similar to that and definitely for bassheads as well. Ra was definitely also sound way different to the last couple of models from AO I have tested from the past. It felt much more safer, friendly and forgiving compared to the Lambda, Zeta, Iota or even their first flagship Omegon MKI. Considering the amount of premium components you would get, such as dual Sonion EST units (per side) below $600 price tag, comparatively less than how much other premium brands would offer does make it a good deal.
Despite some setbacks, Ra is still in my opinion a very good pair of in-ear monitors goes absolutely perfect for relaxing, casual listening when you’re commuting and need something in your ears that sounds good. The Ra has a mildly V-shape curve, while some might assume its U-shape by referring from the official graph. Regardless, main point here it that Ra could provides listener a full blanket of warm bass due to the elevated +13dB sub-bass region. Bass slams are also powerful with great depth yet still nicely articulated. AO’s clever tuning allows the midrange and upper-mids on Ra to maintain good forwardness and naturalness, thanks to the scoop within pinna gain area. Last but not least, the implemented in-house developed pressure venting system allows the Ra to sound airy and overall absolutely pleasant to hear.
As a final thought, I’m thoroughly glad that AO has come out with new releases, expanding their catalogue and improving their portfolio gathering fans from inside and outside of the country. Thus, wrapping up my review for this time and hopefully we will see more interesting releases from Alpha Omega in the future!
Test Tracks
Untuk Perempuan Yang Sedang Di Pelukan - Payung Teduh 44.1kHz
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
The Devil in I - Slipknot44.1kHz
Hunter – Björk 44.1kHz
Hollow (16-Bit Remix) – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 44.1kHz
Rythm - Jamey Haddad; Lenny White; Mark Sherman 44.1kHz
Kimigatame - SuaraDSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
In My Room - Hikaru Utada 44.1kHz
Colors (Live in Studio) - Black Pumas 192kHz
Timbres – Yosi Horikawa 44.1kHz
Aquatic Mouth Dance – Red Hot Chilli Peppers 192kHz
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n0varay
New Head-Fier
Pros: > Premium aesthetics, quality build and material
> Thick angled earpads provide a comfortable wearing experience
> Easy to drive
> Neutral, reference flat tuning
> Highly detailed
> Forward, intimate warm midrange
Cons: > Slightly rough in terms of finish, mainly on the head structure
> Lacking treble extension
AUNE AR5000 - Fruitful Venture Into The Unprecedented
Disclaimer
- The reviewed Aune AR5000 is a personal unit. Thus, all opinions are original ideas and there is zero influence from any 3rd party or external opinion.
- No EQ or filter presets were used during the entire review period.
- Sound evaluations are strictly conducted under neutral and does not include 3rd party accessories (ie; eartips/earpads, cable, reversible mods).
IntroductionAune is a brand that has been in the Chi-Fi market for as long as one could remember back when one first began foraying into this hobby, having own their X7s which I had use as a reference amplifier back then. Known vastly for their desktop headphone amplifiers and DACs, Aune has made some top quality bangers such as the S7 Pro, X8 Magic DAC and much more. That being said, in recent times Aune has once again stepped their foot as an active player once again with some of their new releases such as the AUNE Yuki dongle DAC/AMP, X1s GT DAC, and X8 XVIII BT Magic DAC.
However, with me in this review is the recently released and Aune’s first-ever venture into full-sized headphone segment, which is the AR5000. Priced at $299 on their store and Amazon, the AR5000 features a fully open-back structure with dual detachable cable design and at the heart of this headphone is equipped with a large 50mm dynamic driver alongside a newly developed MLD (Multi-Layer Distributed) diaphragm, tilted driver placement and plenty more features which can be found on their official website.
Unboxing Experience
Simplicity and elegance, are the words best to describe the whole unboxing experience of the AR5000. To start off, the headphone came in a fairly large and heavy box with the outer layer is a piece of cardboard that slides outward revealing the actual packaging which stores the headphone itself.
But first, let us view at the outer packaging itself that can be seen has an embossed printing of the actual headphone. While on the sides and back, can be found the lists of specifications, including all of the branding, technologies and marketing details for the headphone. Now, moving to what is inside the box is the gem itself, the AR5000 resting elegantly and snug in its heavily padded throne covered with high quality golden satin fabric. Aune definitely has thrown everything all out through the roof, in terms of presentation for the AR5000.
Additionally, there is a dual 3.5mm terminated to a single-ended 3.5mm jack cable included as well. Which can be found inside a cardboard box compartment below the headphone that also features an embossed printing of the AR5000 model.
Specifications
- Driver: 50mm dynamic driver, MLD (Multi-Layer Distributed) diaphragm
- Impedance: 28 Ohms
- Frequency Response: 5-41800hz
- Cable: 4 core, OFC (Oxygen-Free Copper), dual 3.5mm to 3.5mm, 1.5m length cable
- Weight: 350g
Purchasing Links and Where to GetAmazon link:
https://www.amazon.com/Aune-Full-Size-Headphones-Detachable-Audiophile/dp/B0CLPC7Q2S
Aune Store:
https://www.aune-store.com/en/aune-ar5000-open-ear-headphone_110208_1240/
Build and ComfortFeaturing a open-back and bulky design yet weighing at just 350 grams, the AR5000 somewhat still manages to place itself within the lightweight category thanks to its build. Aune mostly utilizes high-grade plastic components as what you would find in similarly priced headphones for majority of the parts such as the earcups, headband adjustment mechanism. Aune also has opted for metal on the headband structure, yoke and grills which protects the driver housing. Despite that being the case, the finishing on metal parts mainly are finished poorly and rough, which potentially might cut through your skin if its not handled cautiously. Each respective side of the yoke has an indicator, written “L” and ”R” for users to recognize the appropriate direction for use and plugging In the cable.
Additionally, the headband itself is made out of polyurethane (PU) leather which distributes the weight of the headphone exceptionally well. The pre-attached angled hybrid earpads are easily replaceable without any sort of proprietary locking mechanism. The earpads are made with fenestrated PU leather on the outer wall and mesh interior. It is fairly thick and has a large cavity which can fit four knuckles quite easily, the angled driver design also ensure most ears does not come in contact directly with the driver housing.
Clamping force is fairly secure and snug, although the AR5000 presence is noticeable throughout the whole usage. Its overall weight distribution and comfortable earpads provides a superbly pleasant experience. Likewise with many other headphone that shares similar design, the AR5000 does not isolate external noise. Due to its open-back design as well, this headphones leak sound fairly easy, hence its best to keep this headphone indoors to fully appreciate the sound quality that this headphone has.
Cable
Apart from the original stock, Aune was generous enough to include their recommended upgrade balanced cable for the AR5000 as a free gift, which is the Aune AR3. Regardless, straight out of the package users will get a dual 3.5mm to 3.5mm single-ended termination. AUNE does not specify what kind of material they have used for the stock cable in the specification sheet. Nonetheless, it features a two-braid cable, covered in fabric insulation, measured at 1.5 meter in length which is standard. Each end of the connectors including the Y-splitter are made out of metal with a brushed matte finish. Plus, each side of the jacks are also indicated “L” and ”R” on each side of the connector housing. Overall, it is a good quality, lightweight and beautifully made cable, although that being said it is slightly microphonic when in contact with fabric.
Next, onto the Aune AR3 cable which is sold separately that can be found on their website, selling for a reasonable price of $80. According to their website, this cable features a heavier four-braid, 6N OCC (Ohno Continuous Casting) with Litz Type 2 copper cable. Again, dual 3.5mm connectors both indicated for each side but only this time it is terminated to a 4.4mm Pentaconn plug. Other than that, the overall finish on the connectors and Y-splitter is decorated with a shinier stainless steel housing which looks gorgeous under the lights. The AR3 eliminates all of the microphonic problem that the stock cable has, since it is insulated with soft TPEE material that feels a tad tacky to the touch.
For those who might question about sonic differences or cable geeks, on multiple listening test conducted, switching back and forth between the cables. The AR3 provides better resolution, better separation and looser mid-bass impact compared to the stock cable by a small margin.
Test Equipment
- Local Hi-Res files > Astell & Kern SE100 M.Chat (Linear Phase Fast Roll-off Filter > 2.5mm balanced output)
- Tidal (Master) + Local Hi-Res files via Sony Music Centre > Sony Xperia 1 V (DSEE Ultimate + Dolby Atmos - OFF)
- Lenovo Legion 5 (Nahimic - OFF) > foobar2000 > Chord Mojo 2
Power RequirementsDespite its large drivers and beefy appearance, the AR5000 is in fact a superbly efficient pair of headphones which can be driven optimally through most devices including the Sony Xperia 1 V which has a considerably underpowered amplifier for most full-sized headphones.
Driving it through the A&K SE100 on 2.5mm balanced connection which has a decent 4.1 Vrms of output power, the AR5000 sounds loud and crystal clear at 35-40/150 on the volume wheel for my personal listening. Thus, most modern dongles should have absolutely no problem to provide enough juice to make this headphone really sing its heart out.
Initial Impression
“Wait, this sounds oddly familiar?”
That was the question I asked myself first time hearing the AR5000. Wacky as it seem, it reminds me so much to the legendary Sennheiser HD600 series which has been the gold standard, for audiophiles of all extend. Glad that I finally have tried all models in the series not too long ago, during my recent visit to the store.
Before someone would make any dubious speculation, it does not mean Aune was trying to imitate the HD600 series. Perhaps, one can say it is inspired by the veteran because despite the similarities, the AR5000 has a character of its own especially in the upper-mids and treble range which made this pair distinctively different. The overall sound signature is reference neutral and tuned as flat as it can be. Sub-bass roll-off has a slightly early roll-off yet at the same time still warm and lush, reminiscent to the HD600 series except the AR5000 does not sound neither velvety or as smooth as its counterpart. It sounded a tad more gritty, somewhat emphasized not deliberately yet still creates an over-sharpened image within the 2.5k-5kHz region.
Low Frequency (Bass)Reference tuning often prioritize neutrality and the importance of unaltered reproduction of sound as minimal as it can, especially within the low frequency region. This applies towards the overall bass for the AR5000, it has a flat, reference-like sounding bass with minimal colouration which is perfect for monitoring and mixing use. Do not be mistaken reference neutral to be sterile or cold, because the AR5000 is clearly none of those. The overall timbre and tonality is surprisingly warm, natural and lifelike.
Due to the aforementioned early sub-bass roll-off, the AR5000 does definitely struggles to deliver satisfying level of thick rumbling low-bass performance. Regardless, the gentle rumbling effect that this headphone could do has good amount of definition and texture at macro and micro levels. For example, during the first 30-seconds entering the track Hollow (16 bit Remix) – Björk, the AR5000 renders the deep rumbling sub-bass effect pristine, as the large 50mm dynamic drivers deliver macro details and texture competently.
Furthermore, shifting slightly higher into the mid and upper-bass region, the AR5000 has more than sufficient energy to present tight and controlled bass impact which resembled in a polite “thud”. Since this headphone fell short in terms of bass extension as well, this indirectly affect the overall dynamics and depth. 7 rings - Ariana Grande, is an exemplary example to test the capability on bass slam and delivery. In this song, bass transients for this headphone which is the length of reverberation from loudest to quietest was short, tactile with average layering.
Middle Frequency (Mid)Midrange is the key strength on this pair, whereby tonal balance or colouration in the mids were mainly on the warmer side. Vocals are superbly articulated, natural sounding and detailed. Similarly for string instruments and percussion, timbre was accurate with instruments are easily distinguishable and note weight were also above my expectations, harmoniously balance between organically warm and reference flat. Listening to First Love - Hikaru Utada and Kokoroe (FROM THE FIRST TAKE) - Uru was an absolute bliss and thoroughly impressed by how the vocals are separated with forward warm presentation and pristine. However, due to the upper-mid boost the AR5000 it may sound a tad too forward and not as velvety which can be solved through EQ by lowering frequencies between 2.5k-5kHz.
High Frequency (Treble)Overall, as per said in the initial impression the top-end on AR5000 does sound similar of the Sennheiser HD600, but not entirely the same either. The AR5000 has a pleasant lively treble, fairly crisp with good treble energy. Detail is astoundingly good and forgiving even with poorly recorded tracks, plus devoid from any sibilant within the 5k-8kHz region. Sound of crashes, hi-hats in such tracks like Anesthetize – Porcupine Tree and violins in Underground – Lindsey Stirling reproduced by the AR5000 has good energy and a tad edgy texture, which one does not see as any sort of negativity as it aids to highlight contour of note weight and timbre of those elements.
Furthermore, treble extension is marginally lacking resulting shorter and faster roll-off in the upper-treble range but still maintains good level of airiness, keeping the ambience natural and roomy.
TechnicalityAune AR5000 achieves balance harmony between pleasure and competent level of technical prowess. When it comes to detail retrieval, the AR5000 provides it so effortlessly without being too clinical, like squinting into a magnifying glass. Macro and microdetails are in every song are audible, although that being said the overall resolution this headphone produce was average at best. Soundstaging and spatial imaging were average at best, yet natural thanks to the fully-open back design, nevertheless the width of the soundstage generated by this pair is greater compared to it’s depth. Rhythm – Jamey Haddad; Lenny White; Mark Sherman is a regular track to test these criteria, the AR5000 was able to present high and low levels of details in this binaural recording. Entering midway into the track, the AR5000 renders the movement of cowbell, castanets and maracas being hit while moving were accurate but not at pinpoint level of resolution.
Additionally, the AR5000 possesses very good separation capability elements are all neatly presented and cohesive hindered from any melding. In Aquatic Mouth Dance – Red Hot Chili Peppers to test the separation that the AR5000 could produce, every elements in this track are audible and separated from each other from the start till the closing stages of the track which is the bussiest part, the AR5000 shows no sign of melding. Lastly, the dynamic range test for the Aune AR5000 is rated at average. Utilizing the Ultimate Headphone Test – ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, the AR5000 was able to produce an audible 5 out of 7 counts.
Comparison (s)
AKG K550 MKI ($300)
- AR5000 relishes a much reference flat tuning compared to the K550, which has an emphasized bass and heavier bass slam. Sub-bass texture is much more complex with greater resolution on the K550, but the AR5000 in the other hand present tighter and faster bass transient.
- Due to the bassier approach, midrange on the K550 sounded a tad recessed and less forward but positively this old yet still competent performer from 14 years ago, has a much velvety upper-midrange. Both headphones handles vocal very well, detailed and clean, but AR5000 has a warmer, richer tonal balance compared to the K550.
- Treble is noticeably much brighter and sparkly with greater extension and dynamic range on the K550. Despite being a closed-back headphone, the K550 has a wider width and deeper depth in terms of soundstaging but not at natural sounding likewise with the AR5000. Additionally, the K550 has better detail resolution whereas the AR5000 has a much superior detail retrieval capability. Overall, its fascinating to see how much the AKG still fares head-to-head against a technologically advanced headphone such as the AR5000.
ConclusionAune has ventured into unscathed segment with a strong statement with the AR5000. Although, this pair is regarded as a neutral, reference tuned headphone. It can certainly blend with most genres and apparently versatile for both reference task and for pure music enjoyment. I can imagine that the AR5000 would pair very well with OTL tubes amplifiers, while tuning into some warm, comforting all-time favourite tunes for hours without feeling any discomfort.
That being said, perhaps Aune could place a bit more emphasis on improvising and refine the overall finish of their future product. Despite this being their first ever foray into the headphone market, one could not help but thoroughly impressed with the overall quality from the presentation, material chosen for the build and tuning itself at an affordable price. Thus, that wraps up my review this time, hope it helps and see you all in my next review.
Additional Test Tracks
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
Hunter – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 48kHz
Kimigatame - Suara DSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
Artemis - Lindsey Stirling 44.1kHz
Timbres – Yosi Horikawa 44.1kHz
Poster Child – Red Hot Chilli Peppers 192kHz
Attachments
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n0varay
New Head-Fier
Pros: > Superb build quality
> Ergonomic, comfy shaped shell
> Fully accessories
> Fun, warm timbre and tone
> Decent overall clarity
> Superb musicality
> Amazing bass amount and response with a deep bass
> Good sub-bass extension
> Good transparency
> Energetic, airy high range
> Intense, fun treble
> Good overall technicalities
> Good soundstage width and height
Cons: < Recessed midrange
< Slight BA timbre
< Average resolution
< Needs a good and powerful source matching
< Not a clinical performer
< Not for monitoring
< Cables a little cheap looking
< Competitive market and price segment
< Might be too bassy or too piercing with certain sources
BASN Metalen - Caffeine For Ears
Disclaimer
BASN which stands for ‘Be A Sincere Newcomer’ is actually not a newcomer in this audio industry but they were established way back in 2009 by an audiophile enthusiast, Louis Lee and they are based in California, USA. They are rarely mentioned here in the audiophile scene in Asia but BASN is quite well known in the west for producing in ear monitors for musicians and producers alike. They have a wide catalogue of products that includes a portable vinyl player and a microphone as well. Perry from BASN has contacted us to introduce our community with their brand and we are thrilled to have this opportunity as we at Audiomonsta are keen to find hidden gems all around the globe for us all to enjoy. BASN has kindly sent us a pair of their 4 drivers IEM, the Metalen for a review and we are truly grateful for the opportunity given. How will they fare in this ever growing portable audio scene? We shall find out here.
Functions & SpecificationsBefore we start the review, here are the specifications of the BASN Metalen;
- Drivers: 2 x 10mm dynamic + 2 balanced armatures
- 18 Ohms, 102 dB Sensitivity
- 20 - 20 khz Frequency Response Range
- CNC Precision titanium Alloy
- Lightweight Ergonomic Design
- 2 recessed MMCX silver plated cables (1 x with mic, 1 x 4 core single ended)
- In green or blue colour
The BASN Metalen can be purchased from their store and Amazon;
https://www.amazon.com/dp/B0BXPF7VLM/ref=twister_B0BXPJ57JP?_encoding=UTF8&th=1
https://www.basnaudio.com/
Packaging & AccessoriesThe packaging here is a simple, straightforward type of retail packaging that looks professional steering away from those over the top anime themes. They are packed like a well established company package with their information on the back inside a medium small box. Inside we will find a plethora of accessories that is worthy of it's asking price which includes 3 pairs of foam tips, 3 pairs of silicone tips, a cleaning tool, a 6.35mm converter, 2 basic cable which consists of 1 with microphone and 1 braided single ended cable, a zipper hard case and the IEM itself. The Metalen is fully accessorised indeed and very neatly packed.
DesignThe design is an ergonomic shaped shell that is quite small in size and they fit into the ear concha snugly giving a superb comfort that is suitable to wear for a long listening session. The Metalen is a CNC machined titanium alloy build that is what I would call solid, seamless and feels premium on hands with a slight weight on it. The overall build is impressive to say the least with their brand logo imprinted on the faceplate. BASN also claims that the titanium alloy that they used is also great in controlling the resonance problem to create a clearer overall sound.
The Metalen is equipped with 4 drivers which consist of 2 dynamic drivers along with a dual balanced armature. The dynamic drivers are dual 10 mm drivers that are in charge of the lower frequencies towards the midrange along with 2 balanced armature fixed near the nozzle where 1 driver is in charge of the mid to highs region and another for the high region.
The nozzle is rather large in diameter and they are fitted with a metal mesh for protection. There are 2 vents near the nozzle and another vent at the inside of the body providing a well vented IEM that possesses zero driver flex.
There are a total of 6 pairs of eartips that consist of 3 pairs of black foam tips and 3 pairs of silicone eartips in normal size bore all in small, medium and large sizes.
They come with a silver metallic zippered hard case that is made with some type of fabric that mimics a steel case. They do offer a great protection for the IEM and are practical for everyday usage.
The Metalen has a protruding type of MMCX plugs that is quite different to minimise the swivelling effect of normal MMCX plugs but other 3rd party MMCX can be used without any problems.
There are 2 types of silver plated cable included in the package where 1 straight cable with a 3 button microphone that has a rubbery body and they are quite sticky to the touch and another single ended cable in 3.5mm 4 core braided cable. Both of these cables are fitted with ear guides with memory metal inside to form a better fit on your ears. The cables honestly looked a little on the cheaper side and I would prefer a single good quality cable instead of 2 cheaper ones.
Gears Used for Comparisons
- Shanling M6 Ultra
- Fiio Q7
- Questyle M15
- Hiby FC6
- FiiO BTR7
- Intime Sho DD
Disclaimers
- The reviewed IEM is a borrowed personal unit. Regardless, all the opinions are original ideas, there is zero influence from any 3rd party or external opinions.
- No EQ or filter presets were used during the entire review period.
- Sound evaluation are kept neutral and does not include 3rd party accessories (ie; eartips, cable, reversible mods)
IntroductionAlpha Omega Custom In-Ear or better known as AO for short has enjoyed excellent spell during recent times, seeing brand new handcrafted models of custom in-ears rolling out of their production line. Entering midway during 2023 last year, AO has released four new models such as the Voyager, a collaboration project with Hillaudio Malaysia which I have covered last time. Next, was the Indomitus, followed by the continuation of their flagship sequel, Omegon MKII and lastly the latest one which I will be reviewing this time, is the Alpha Omega Ra. Every time AO released a brand new model, I cannot help myself being excited and eagerly anticipated to try out the models for myself.
Luckily, with the help of my audio buddies that I have met online, I was kindly offered to test and review the Alpha Omega Ra at my own comfort. Huge shout-out and appreciation for the kind offer. At the heart of this earpiece, AO has presented to us 7-drivers total of tribrid design for the Ra. Combining one beryllium plated dynamic-driver, 4 Sonion balanced armatures for its low-mid and midrange frequencies and lastly 2 Sonion electrostatic drivers for the treble feeded through an in-house developed 4-way passive crossover. While that may seem mouthful enough to say, this whole package comes with a price tag of only RM2668 or equivalent to US$563 (rounded-off). Hence, with that let’s get on with the review.
Unboxing Experience
Packaging of the Ra was minimal and straightforward, similar to most of AO offering in their catalog albeit midrange or flagship models. Presentation was overall basic whereby there is no such premium feature when compared to other brands. Nonetheless, what is more important is certainly what’s inside the package and the monitors itself. On the sleeve cover there is a branding logo on the front, a specification list and a diagram of the frequency response at the back. By sliding the sleeve either top or bottom unveils the main box.
Flipping the main box cover, unveils the monitor itself placed snug inside a thick foam cut out. As we explore further AO have included in the package, one custom made premium casing made from faux leather complemented with a well-padded velvet upholstery in the inside to store your monitors. Stored in the casing as well is the stock cable and 3 pairs of silicone eartips that what seems to be similar of AT07 eartips which comes in various sizes (S,M,L).
Cable
AO has certainly hit the nail on the head with the cable aesthetics, which further compliments the overall aesthetics of the Ra. In terms of the build and material, AO went to choose a 4 core, gold plated silver cable which, I reckon are SPC cables. Hands on experience using the cable was overall great, similarly to other AO monitors which I have tried in the past, such as the Lambda, Iota and Omegon MKI. The cable is insulated with a soft pliable yellowish PVC material which further radiates its golden charm. Braiding quality on this are neat and fairly secure, the connectors are made out of lightweight stainless steel. At the end of each 2-pin connectors, there are no such indication of “L” or “R” other than the plastic bit which holds the two tiny pins in red and clear.
Specifications
- Driver(s): 1 Beryllium Plated Dynamic-driver, 2 Sonion Low-mid BA, 2 Sonion Mid BA, 2 Sonion EST Drivers with 4-way Passive Crossover
- Impedance: 28 Ohms
- Sensitivity: 105dB/SPL
- Frequency Response: 10Hz-40kHz
- Cable: 4 core, gold plated silver cable, 2-pin (0.78mm) to 3.5mm connectors
Build and ComfortWith there are being so much drivers cramped inside the Ra, it is no surprise to see this monitor to have such large shell which are made with premium resin using a custom made universal mold. The motive chosen by AO to decorate this earpiece is inspired by galaxies or milky way given that the overall colour language were predominantly white with a touch of pinkish hue and golden glitters. Of course, customers can opt to add their own touch of creativity to design their own customized earpiece via personal consultation. But even for the universal variant, the artwork quality for Ra looks absolutely stunning and gorgeous.
One notable feature aspect that strikes me the most when inspecting the design for the Ra was the existence of large vent port on each side of the monitor, positioned next to the 2-pin connectors. Curious with my finding, I brought the matter into a discussion among audiophile buddies including Clement, the man behind Alpha Omega inside a small WhatsApp group chat. Little did I knew, my wild guess of the “secret sauce” was true, a similar feature of FIR Audio’s ATOM Venting technology. Which AO call it as Alpha Omega Proprietary Venting System that reduces pressure build up in a sealed ear canal, hence provides greater comfort, less ear fatigue and indirectly affects the overall bass delivery which I will further explain in sound evaluation.
The overall texture of the shell is smooth to the hand and polished. At the nozzle end however it was not quite refined as there are some unevenness when compared to other IEMs I tried recent times that shares similar build material. Even though comfort varies across users, I personally consider the design was very comfortable and ergonomic with an out sticking design on that acts like a supporting feature that naturally slides into my concha ensuring a snug and secure seal when using the IEM. The feather light build allows me to use the Ra comfortably, even for long hours. Analyzing inside of the earpieces, seeing all of the wiring are neat and professionally made albeit the inside cavity is apparently empty. Hence, it is best to not drop these gorgeous earpieces from tall height or onto hard surface since to avoid serious damage to the internal components.
Test Equipment
- Local Hi-Res files > Astell&Kern SE100 M.Chat (Linear Phase Fast Roll-off Filter)
- Tidal (Master) + Local Hi-Res files via Sony Music Centre > Sony Xperia 1 V (DSEE Ultimate + Dolby Atmos - OFF)
Power RequirementsWhen looking through the specification numbers, the Ra seems to be a friendly monitor to be driven directly through a smartphone. Although the case is true, this IEM does benefit from higher output number as greater dynamics can be achieved when properly amped.
Driving it straight from my Sony Xperia 1 V, I had to turn up the volume between 10-13/30 to achieve a comfortable listening experience. Plugging the Ra into my Astell&Kern SE100 on both balanced and unbalanced output requires me to turn the volume wheel up to 60-70/150 on unbalanced, meanwhile on balanced requires me to dial downwards to 50/150 at most.
Initial Impression
Frequency response for Ra, taken from Alpha Omega Official Instagram page.
Alpha Omega Ra is a mildly V-shaped pair of monitors that exudes warm, musical sound signature with prominent emphasis mainly in the sub-bass region. Approximately, the graph starts at least from +13dB in the 20Hz frequency which then gradually drops before 500Hz frequency. This results to a warm tonal balance, rich and coloured sound, however Ra does not sound weak at all in the higher frequencies. Upper-mids and top end of the frequencies are elevated a couple decibels shy below the bass shelf.
Moreover, pinna region on Ra is scooped out by a few decibels to keep preserve vocal naturalness which I appreciate the most. Past the 10kHz frequencies however, I could notice Ra fell short to present better than average treble extension even when compared to my dual-BA reference Audio Technica ATH-IM02. Regardless, the usage of EST in this earpiece, added with the vent ports fortunately, kept the Ra in the game because this IEM has tons of detail retrieval, good resolving treble and excellent airiness.
Low Frequency (Bass)
Being its most valuable asset and strongest attribute, Ra has an absurdly deep low rumbling bass and wide extension in the upper-bass to lower-mids. The elevated sub-bass produced by the single beryllium plated DD gives the Ra a powerful subwoofer effect, capable of rendering detailed textured low-bass without any sort of muddiness. While mid-bass and upper-bass delivery has moderate speed, bass slam resembles a thick yet airy “thud” sound rather than boomy, which was a false assessment. Each bass slam has an emphasized note weight and impact due to the boosted sub-bass, additionally bass decay and transients are slow and extended providing slightly above average depth reach from the loudest to the quietest of bass
Coming back to my earlier comment regarding the functionality of the large vent port on Ra, this similar feature to FIR Audio’s ATOM Venting system allows the Ra to produce not only the deep rumble sub-bass and keeping internal air pressure at bay, but it is also responsible for the natural dispersion for each bass slam. It can be quite difficult to explain it in words but a simple test you can do is by covering the vent ports with blu tacks or tape. From my own analysis, I could hear there was a noticeable amount of resonance within the chamber with the mid-bass hits with a slight more aggressive.
Middle Frequency (Mid)
Despite the Ra could be considered as a bass heavy and many might associate it to an overly warm, dark sound. It was not entirely the case with Ra, the lower-mids blends superbly with the excess upper-bass. That being said, the midrange handled by four Sonion balanced armature units are tuned slightly north to neutral in terms of tonal balance.
Moving into the 1kHz frequency and above, AO did a fairly stunning job to keep the midrange fairly forward, natural with excellent presence for such tuning without being overwhelmed by the heavy bass. In the upper-mids, Ra in my opinion has a proper pinna gain, which I reckon AO did manage to scoop a couple decibels from frequencies around 2k-3.5kHz without sacrificing detail within the midrange considering this is a smoother tuned monitor.
High Frequency (Treble)
Treble tuning of Ra has a decent amount of sparkle and energy which honestly I was expecting a bit more considering AO has opt for dual Sonion EST drivers. But either way, the treble was still crisp, very capable gushing out low and high level of detail. To add onto that as well, I also did test Ra with some of my sibilant test tracks and it performed wonderfully well to keep sibilant under radar.
However, treble extension was where I personally felt Ra was lacking, due to that instruments that is played at high frequencies does not feel quite realistic. Comparatively speaking, while I was swapping back and forth with my reference monitors, Audio Technica ATH-IM02. In summary, if you prioritize treble satisfaction then these may not suit you, but if you’re in the market for something with strong bass, high musicality and without losing detail, Ra does it exceptionally well.
TechnicalityFrom a technical perspective, soundstage on Ra was average at best. There was decent amount of width but in terms of height, it was surprisingly tall. Interesting enough, due to the exceptional level of airiness coming from the vent ports, I initially thought Ra has a wide soundstage until I went on and play a couple more tracks to confirm my evaluations. Spatial imaging was sligthy above average, it was quite accurate but not quite as good when compared to the likes of Etymotic Evo which unfortunately I could not compare thoroughly in this review. Regardless, Ra separates handles various elements playing simultaneously well even with busier tracks, it does not sound congested nor resulting to melding. Layering was average at best, due to the lack of depth some of the instruments and other elements included are pushed into the same row.
Although the tuning on Ra prioritizes smoothness and musicality, these does not felt lacking in detail. Macrodetails and small nuances are present yet not overdone, however the overall resolution was only as far as average. Lastly, wraping it off with the dynamic range test for Ra is rated at average. Utilizing the Ultimate Headphone Test - ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, Ra was able to produce an audible 5 out of 7 counts.
Comparison(s)
- Audio Technica ATH-IM02
Even from the graph one could tell that Ra is much bassier than the IM02 by a long shot, pretty much beats it easily in the bass department with ease. That being said, IM02 provides better resolution and overall cleaner bass response compared to Ra which has a slight bass bleed into the lower-mids. In the midrange and treble, is where the IM02 shines due to the differences in its tuning.
Upper-mids are much more forward, natural and analog sounding, however Ra handles midrange detail a tad better with blacker background. Treble on both monitors are similarly relaxing and very smooth. Unfortunately, as I mentioned about the lack of extension on Ra was also where the IM02 simply outshines it including other technical aspects such as detail resolution, dynamic range and soundstaging.
- Etymotic Evo
For this one, I have to do it by memory since I only manage to compare both of these side by side for less than 10 minutes. Hence, I will not go into detail regarding these two and only compare the attributes that I could recall. Most obviously when comparing both, soundstaging, detail retrieval and resolution on Evo was night and day clearly blows Ra out of the park.
Both monitors does go deep into the sub-bass, however Ra does a better job at definition and packs more weight but Evo handled texture a tad better and detailed. Midrange was obviously leaner with colder tonal balance on the Evo. Treble was much more exciting and crisper on Evo, while Ra had a fuller treble note. Both monitors have similar problems when it comes to treble extension, but Evo has a slight advantage over Ra.
Eartip Combination(s)
AO Ra with the provided stock pair of eartips which were used throughout the sound evaluation.
- E Pro EP00
One of my favourite pairing combination with the Ra, great increase in the midrange quality, vocals are much more forward with better clarity. Bass slam were tighter and controlled. Treble is a tad subdued but in return, it yields greater treble extension and much natural soundstage, airiness were not affected in any negative manner.
- Azla Xelastec
Also my favourites, sounds similar to the EP00 for most parts, although treble is much crisper, more sparkle and detail retrieval with these. Airiness stays similar but with soundstaging sounded a tad boxy. Provides much secure seal and requires less adjustment into the ear canal compared to EP00.
- Tangzu Tang Sancai (Balanced)
Sounds most balance with the Ra, bass slam feels woolly, rounded and immersive. Midrange is still recessed but brought slightly forward than stock.
- Triple Flange
Similar to Tang Sancai, kept most of the bass quantity. The difference between both is that triple flange sounds a tad tighter. Soundstaging however, was the narrowest out of the bunch, but instead you will get the best detail retrieval due to its being closer to eardrum.
- Dunu S&S
Decent combination, sounds similar to stock but with slightly much forward midrange. Treble were splashy unfortunately.
Purchasing Links and Where to GetAlpha Omega Official Website
https://www.alphaomegaciem.com/ra
ConclusionWhile I was sitting down and just take a moment to appreciate a sound signature that is north by miles away from my flat neutral preference. I could see how Ra would slot itself quite easily to those who would want an upgrade from for example, Thieaudio Hype 2 or such monitors that is similar to that and definitely for bassheads as well. Ra was definitely also sound way different to the last couple of models from AO I have tested from the past. It felt much more safer, friendly and forgiving compared to the Lambda, Zeta, Iota or even their first flagship Omegon MKI. Considering the amount of premium components you would get, such as dual Sonion EST units (per side) below $600 price tag, comparatively less than how much other premium brands would offer does make it a good deal.
Despite some setbacks, Ra is still in my opinion a very good pair of in-ear monitors goes absolutely perfect for relaxing, casual listening when you’re commuting and need something in your ears that sounds good. The Ra has a mildly V-shape curve, while some might assume its U-shape by referring from the official graph. Regardless, main point here it that Ra could provides listener a full blanket of warm bass due to the elevated +13dB sub-bass region. Bass slams are also powerful with great depth yet still nicely articulated. AO’s clever tuning allows the midrange and upper-mids on Ra to maintain good forwardness and naturalness, thanks to the scoop within pinna gain area. Last but not least, the implemented in-house developed pressure venting system allows the Ra to sound airy and overall absolutely pleasant to hear.
As a final thought, I’m thoroughly glad that AO has come out with new releases, expanding their catalogue and improving their portfolio gathering fans from inside and outside of the country. Thus, wrapping up my review for this time and hopefully we will see more interesting releases from Alpha Omega in the future!
Test Tracks
Untuk Perempuan Yang Sedang Di Pelukan - Payung Teduh 44.1kHz
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
The Devil in I - Slipknot44.1kHz
Hunter – Björk 44.1kHz
Hollow (16-Bit Remix) – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 44.1kHz
Rythm - Jamey Haddad; Lenny White; Mark Sherman 44.1kHz
Kimigatame - SuaraDSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
In My Room - Hikaru Utada 44.1kHz
Colors (Live in Studio) - Black Pumas 192kHz
Timbres – Yosi Horikawa 44.1kHz
Aquatic Mouth Dance – Red Hot Chilli Peppers 192kHz
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n0varay
New Head-Fier
Pros: > Premium aesthetics, quality build and material
> Thick angled earpads provide a comfortable wearing experience
> Easy to drive
> Neutral, reference flat tuning
> Highly detailed
> Forward, intimate warm midrange
Cons: > Slightly rough in terms of finish, mainly on the head structure
> Lacking treble extension
AUNE AR5000 - Fruitful Venture Into The Unprecedented
Disclaimer
- The reviewed Aune AR5000 is a personal unit. Thus, all opinions are original ideas and there is zero influence from any 3rd party or external opinion.
- No EQ or filter presets were used during the entire review period.
- Sound evaluations are strictly conducted under neutral and does not include 3rd party accessories (ie; eartips/earpads, cable, reversible mods).
IntroductionAune is a brand that has been in the Chi-Fi market for as long as one could remember back when one first began foraying into this hobby, having own their X7s which I had use as a reference amplifier back then. Known vastly for their desktop headphone amplifiers and DACs, Aune has made some top quality bangers such as the S7 Pro, X8 Magic DAC and much more. That being said, in recent times Aune has once again stepped their foot as an active player once again with some of their new releases such as the AUNE Yuki dongle DAC/AMP, X1s GT DAC, and X8 XVIII BT Magic DAC.
However, with me in this review is the recently released and Aune’s first-ever venture into full-sized headphone segment, which is the AR5000. Priced at $299 on their store and Amazon, the AR5000 features a fully open-back structure with dual detachable cable design and at the heart of this headphone is equipped with a large 50mm dynamic driver alongside a newly developed MLD (Multi-Layer Distributed) diaphragm, tilted driver placement and plenty more features which can be found on their official website.
Unboxing Experience
Simplicity and elegance, are the words best to describe the whole unboxing experience of the AR5000. To start off, the headphone came in a fairly large and heavy box with the outer layer is a piece of cardboard that slides outward revealing the actual packaging which stores the headphone itself.
But first, let us view at the outer packaging itself that can be seen has an embossed printing of the actual headphone. While on the sides and back, can be found the lists of specifications, including all of the branding, technologies and marketing details for the headphone. Now, moving to what is inside the box is the gem itself, the AR5000 resting elegantly and snug in its heavily padded throne covered with high quality golden satin fabric. Aune definitely has thrown everything all out through the roof, in terms of presentation for the AR5000.
Additionally, there is a dual 3.5mm terminated to a single-ended 3.5mm jack cable included as well. Which can be found inside a cardboard box compartment below the headphone that also features an embossed printing of the AR5000 model.
Specifications
- Driver: 50mm dynamic driver, MLD (Multi-Layer Distributed) diaphragm
- Impedance: 28 Ohms
- Frequency Response: 5-41800hz
- Cable: 4 core, OFC (Oxygen-Free Copper), dual 3.5mm to 3.5mm, 1.5m length cable
- Weight: 350g
Purchasing Links and Where to GetAmazon link:
https://www.amazon.com/Aune-Full-Size-Headphones-Detachable-Audiophile/dp/B0CLPC7Q2S
Aune Store:
https://www.aune-store.com/en/aune-ar5000-open-ear-headphone_110208_1240/
Build and ComfortFeaturing a open-back and bulky design yet weighing at just 350 grams, the AR5000 somewhat still manages to place itself within the lightweight category thanks to its build. Aune mostly utilizes high-grade plastic components as what you would find in similarly priced headphones for majority of the parts such as the earcups, headband adjustment mechanism. Aune also has opted for metal on the headband structure, yoke and grills which protects the driver housing. Despite that being the case, the finishing on metal parts mainly are finished poorly and rough, which potentially might cut through your skin if its not handled cautiously. Each respective side of the yoke has an indicator, written “L” and ”R” for users to recognize the appropriate direction for use and plugging In the cable.
Additionally, the headband itself is made out of polyurethane (PU) leather which distributes the weight of the headphone exceptionally well. The pre-attached angled hybrid earpads are easily replaceable without any sort of proprietary locking mechanism. The earpads are made with fenestrated PU leather on the outer wall and mesh interior. It is fairly thick and has a large cavity which can fit four knuckles quite easily, the angled driver design also ensure most ears does not come in contact directly with the driver housing.
Clamping force is fairly secure and snug, although the AR5000 presence is noticeable throughout the whole usage. Its overall weight distribution and comfortable earpads provides a superbly pleasant experience. Likewise with many other headphone that shares similar design, the AR5000 does not isolate external noise. Due to its open-back design as well, this headphones leak sound fairly easy, hence its best to keep this headphone indoors to fully appreciate the sound quality that this headphone has.
Cable
Apart from the original stock, Aune was generous enough to include their recommended upgrade balanced cable for the AR5000 as a free gift, which is the Aune AR3. Regardless, straight out of the package users will get a dual 3.5mm to 3.5mm single-ended termination. AUNE does not specify what kind of material they have used for the stock cable in the specification sheet. Nonetheless, it features a two-braid cable, covered in fabric insulation, measured at 1.5 meter in length which is standard. Each end of the connectors including the Y-splitter are made out of metal with a brushed matte finish. Plus, each side of the jacks are also indicated “L” and ”R” on each side of the connector housing. Overall, it is a good quality, lightweight and beautifully made cable, although that being said it is slightly microphonic when in contact with fabric.
Next, onto the Aune AR3 cable which is sold separately that can be found on their website, selling for a reasonable price of $80. According to their website, this cable features a heavier four-braid, 6N OCC (Ohno Continuous Casting) with Litz Type 2 copper cable. Again, dual 3.5mm connectors both indicated for each side but only this time it is terminated to a 4.4mm Pentaconn plug. Other than that, the overall finish on the connectors and Y-splitter is decorated with a shinier stainless steel housing which looks gorgeous under the lights. The AR3 eliminates all of the microphonic problem that the stock cable has, since it is insulated with soft TPEE material that feels a tad tacky to the touch.
For those who might question about sonic differences or cable geeks, on multiple listening test conducted, switching back and forth between the cables. The AR3 provides better resolution, better separation and looser mid-bass impact compared to the stock cable by a small margin.
Test Equipment
- Local Hi-Res files > Astell & Kern SE100 M.Chat (Linear Phase Fast Roll-off Filter > 2.5mm balanced output)
- Tidal (Master) + Local Hi-Res files via Sony Music Centre > Sony Xperia 1 V (DSEE Ultimate + Dolby Atmos - OFF)
- Lenovo Legion 5 (Nahimic - OFF) > foobar2000 > Chord Mojo 2
Power RequirementsDespite its large drivers and beefy appearance, the AR5000 is in fact a superbly efficient pair of headphones which can be driven optimally through most devices including the Sony Xperia 1 V which has a considerably underpowered amplifier for most full-sized headphones.
Driving it through the A&K SE100 on 2.5mm balanced connection which has a decent 4.1 Vrms of output power, the AR5000 sounds loud and crystal clear at 35-40/150 on the volume wheel for my personal listening. Thus, most modern dongles should have absolutely no problem to provide enough juice to make this headphone really sing its heart out.
Initial Impression
“Wait, this sounds oddly familiar?”
That was the question I asked myself first time hearing the AR5000. Wacky as it seem, it reminds me so much to the legendary Sennheiser HD600 series which has been the gold standard, for audiophiles of all extend. Glad that I finally have tried all models in the series not too long ago, during my recent visit to the store.
Before someone would make any dubious speculation, it does not mean Aune was trying to imitate the HD600 series. Perhaps, one can say it is inspired by the veteran because despite the similarities, the AR5000 has a character of its own especially in the upper-mids and treble range which made this pair distinctively different. The overall sound signature is reference neutral and tuned as flat as it can be. Sub-bass roll-off has a slightly early roll-off yet at the same time still warm and lush, reminiscent to the HD600 series except the AR5000 does not sound neither velvety or as smooth as its counterpart. It sounded a tad more gritty, somewhat emphasized not deliberately yet still creates an over-sharpened image within the 2.5k-5kHz region.
Low Frequency (Bass)Reference tuning often prioritize neutrality and the importance of unaltered reproduction of sound as minimal as it can, especially within the low frequency region. This applies towards the overall bass for the AR5000, it has a flat, reference-like sounding bass with minimal colouration which is perfect for monitoring and mixing use. Do not be mistaken reference neutral to be sterile or cold, because the AR5000 is clearly none of those. The overall timbre and tonality is surprisingly warm, natural and lifelike.
Due to the aforementioned early sub-bass roll-off, the AR5000 does definitely struggles to deliver satisfying level of thick rumbling low-bass performance. Regardless, the gentle rumbling effect that this headphone could do has good amount of definition and texture at macro and micro levels. For example, during the first 30-seconds entering the track Hollow (16 bit Remix) – Björk, the AR5000 renders the deep rumbling sub-bass effect pristine, as the large 50mm dynamic drivers deliver macro details and texture competently.
Furthermore, shifting slightly higher into the mid and upper-bass region, the AR5000 has more than sufficient energy to present tight and controlled bass impact which resembled in a polite “thud”. Since this headphone fell short in terms of bass extension as well, this indirectly affect the overall dynamics and depth. 7 rings - Ariana Grande, is an exemplary example to test the capability on bass slam and delivery. In this song, bass transients for this headphone which is the length of reverberation from loudest to quietest was short, tactile with average layering.
Middle Frequency (Mid)Midrange is the key strength on this pair, whereby tonal balance or colouration in the mids were mainly on the warmer side. Vocals are superbly articulated, natural sounding and detailed. Similarly for string instruments and percussion, timbre was accurate with instruments are easily distinguishable and note weight were also above my expectations, harmoniously balance between organically warm and reference flat. Listening to First Love - Hikaru Utada and Kokoroe (FROM THE FIRST TAKE) - Uru was an absolute bliss and thoroughly impressed by how the vocals are separated with forward warm presentation and pristine. However, due to the upper-mid boost the AR5000 it may sound a tad too forward and not as velvety which can be solved through EQ by lowering frequencies between 2.5k-5kHz.
High Frequency (Treble)Overall, as per said in the initial impression the top-end on AR5000 does sound similar of the Sennheiser HD600, but not entirely the same either. The AR5000 has a pleasant lively treble, fairly crisp with good treble energy. Detail is astoundingly good and forgiving even with poorly recorded tracks, plus devoid from any sibilant within the 5k-8kHz region. Sound of crashes, hi-hats in such tracks like Anesthetize – Porcupine Tree and violins in Underground – Lindsey Stirling reproduced by the AR5000 has good energy and a tad edgy texture, which one does not see as any sort of negativity as it aids to highlight contour of note weight and timbre of those elements.
Furthermore, treble extension is marginally lacking resulting shorter and faster roll-off in the upper-treble range but still maintains good level of airiness, keeping the ambience natural and roomy.
TechnicalityAune AR5000 achieves balance harmony between pleasure and competent level of technical prowess. When it comes to detail retrieval, the AR5000 provides it so effortlessly without being too clinical, like squinting into a magnifying glass. Macro and microdetails are in every song are audible, although that being said the overall resolution this headphone produce was average at best. Soundstaging and spatial imaging were average at best, yet natural thanks to the fully-open back design, nevertheless the width of the soundstage generated by this pair is greater compared to it’s depth. Rhythm – Jamey Haddad; Lenny White; Mark Sherman is a regular track to test these criteria, the AR5000 was able to present high and low levels of details in this binaural recording. Entering midway into the track, the AR5000 renders the movement of cowbell, castanets and maracas being hit while moving were accurate but not at pinpoint level of resolution.
Additionally, the AR5000 possesses very good separation capability elements are all neatly presented and cohesive hindered from any melding. In Aquatic Mouth Dance – Red Hot Chili Peppers to test the separation that the AR5000 could produce, every elements in this track are audible and separated from each other from the start till the closing stages of the track which is the bussiest part, the AR5000 shows no sign of melding. Lastly, the dynamic range test for the Aune AR5000 is rated at average. Utilizing the Ultimate Headphone Test – ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, the AR5000 was able to produce an audible 5 out of 7 counts.
Comparison (s)
AKG K550 MKI ($300)
- AR5000 relishes a much reference flat tuning compared to the K550, which has an emphasized bass and heavier bass slam. Sub-bass texture is much more complex with greater resolution on the K550, but the AR5000 in the other hand present tighter and faster bass transient.
- Due to the bassier approach, midrange on the K550 sounded a tad recessed and less forward but positively this old yet still competent performer from 14 years ago, has a much velvety upper-midrange. Both headphones handles vocal very well, detailed and clean, but AR5000 has a warmer, richer tonal balance compared to the K550.
- Treble is noticeably much brighter and sparkly with greater extension and dynamic range on the K550. Despite being a closed-back headphone, the K550 has a wider width and deeper depth in terms of soundstaging but not at natural sounding likewise with the AR5000. Additionally, the K550 has better detail resolution whereas the AR5000 has a much superior detail retrieval capability. Overall, its fascinating to see how much the AKG still fares head-to-head against a technologically advanced headphone such as the AR5000.
ConclusionAune has ventured into unscathed segment with a strong statement with the AR5000. Although, this pair is regarded as a neutral, reference tuned headphone. It can certainly blend with most genres and apparently versatile for both reference task and for pure music enjoyment. I can imagine that the AR5000 would pair very well with OTL tubes amplifiers, while tuning into some warm, comforting all-time favourite tunes for hours without feeling any discomfort.
That being said, perhaps Aune could place a bit more emphasis on improvising and refine the overall finish of their future product. Despite this being their first ever foray into the headphone market, one could not help but thoroughly impressed with the overall quality from the presentation, material chosen for the build and tuning itself at an affordable price. Thus, that wraps up my review this time, hope it helps and see you all in my next review.
Additional Test Tracks
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
Hunter – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 48kHz
Kimigatame - Suara DSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
Artemis - Lindsey Stirling 44.1kHz
Timbres – Yosi Horikawa 44.1kHz
Poster Child – Red Hot Chilli Peppers 192kHz
Attachments
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n0varay
New Head-Fier
Pros: > Superb build quality
> Ergonomic, comfy shaped shell
> Fully accessories
> Fun, warm timbre and tone
> Decent overall clarity
> Superb musicality
> Amazing bass amount and response with a deep bass
> Good sub-bass extension
> Good transparency
> Energetic, airy high range
> Intense, fun treble
> Good overall technicalities
> Good soundstage width and height
Cons: < Recessed midrange
< Slight BA timbre
< Average resolution
< Needs a good and powerful source matching
< Not a clinical performer
< Not for monitoring
< Cables a little cheap looking
< Competitive market and price segment
< Might be too bassy or too piercing with certain sources
BASN Metalen - Caffeine For Ears
Disclaimer
BASN which stands for ‘Be A Sincere Newcomer’ is actually not a newcomer in this audio industry but they were established way back in 2009 by an audiophile enthusiast, Louis Lee and they are based in California, USA. They are rarely mentioned here in the audiophile scene in Asia but BASN is quite well known in the west for producing in ear monitors for musicians and producers alike. They have a wide catalogue of products that includes a portable vinyl player and a microphone as well. Perry from BASN has contacted us to introduce our community with their brand and we are thrilled to have this opportunity as we at Audiomonsta are keen to find hidden gems all around the globe for us all to enjoy. BASN has kindly sent us a pair of their 4 drivers IEM, the Metalen for a review and we are truly grateful for the opportunity given. How will they fare in this ever growing portable audio scene? We shall find out here.
Functions & SpecificationsBefore we start the review, here are the specifications of the BASN Metalen;
- Drivers: 2 x 10mm dynamic + 2 balanced armatures
- 18 Ohms, 102 dB Sensitivity
- 20 - 20 khz Frequency Response Range
- CNC Precision titanium Alloy
- Lightweight Ergonomic Design
- 2 recessed MMCX silver plated cables (1 x with mic, 1 x 4 core single ended)
- In green or blue colour
The BASN Metalen can be purchased from their store and Amazon;
https://www.amazon.com/dp/B0BXPF7VLM/ref=twister_B0BXPJ57JP?_encoding=UTF8&th=1
https://www.basnaudio.com/
Packaging & AccessoriesThe packaging here is a simple, straightforward type of retail packaging that looks professional steering away from those over the top anime themes. They are packed like a well established company package with their information on the back inside a medium small box. Inside we will find a plethora of accessories that is worthy of it's asking price which includes 3 pairs of foam tips, 3 pairs of silicone tips, a cleaning tool, a 6.35mm converter, 2 basic cable which consists of 1 with microphone and 1 braided single ended cable, a zipper hard case and the IEM itself. The Metalen is fully accessorised indeed and very neatly packed.
DesignThe design is an ergonomic shaped shell that is quite small in size and they fit into the ear concha snugly giving a superb comfort that is suitable to wear for a long listening session. The Metalen is a CNC machined titanium alloy build that is what I would call solid, seamless and feels premium on hands with a slight weight on it. The overall build is impressive to say the least with their brand logo imprinted on the faceplate. BASN also claims that the titanium alloy that they used is also great in controlling the resonance problem to create a clearer overall sound.
The Metalen is equipped with 4 drivers which consist of 2 dynamic drivers along with a dual balanced armature. The dynamic drivers are dual 10 mm drivers that are in charge of the lower frequencies towards the midrange along with 2 balanced armature fixed near the nozzle where 1 driver is in charge of the mid to highs region and another for the high region.
The nozzle is rather large in diameter and they are fitted with a metal mesh for protection. There are 2 vents near the nozzle and another vent at the inside of the body providing a well vented IEM that possesses zero driver flex.
There are a total of 6 pairs of eartips that consist of 3 pairs of black foam tips and 3 pairs of silicone eartips in normal size bore all in small, medium and large sizes.
They come with a silver metallic zippered hard case that is made with some type of fabric that mimics a steel case. They do offer a great protection for the IEM and are practical for everyday usage.
The Metalen has a protruding type of MMCX plugs that is quite different to minimise the swivelling effect of normal MMCX plugs but other 3rd party MMCX can be used without any problems.
There are 2 types of silver plated cable included in the package where 1 straight cable with a 3 button microphone that has a rubbery body and they are quite sticky to the touch and another single ended cable in 3.5mm 4 core braided cable. Both of these cables are fitted with ear guides with memory metal inside to form a better fit on your ears. The cables honestly looked a little on the cheaper side and I would prefer a single good quality cable instead of 2 cheaper ones.
Gears Used for Comparisons
- Shanling M6 Ultra
- Fiio Q7
- Questyle M15
- Hiby FC6
- FiiO BTR7
- Intime Sho DD
Disclaimers
- The reviewed IEM is a borrowed personal unit. Regardless, all the opinions are original ideas, there is zero influence from any 3rd party or external opinions.
- No EQ or filter presets were used during the entire review period.
- Sound evaluation are kept neutral and does not include 3rd party accessories (ie; eartips, cable, reversible mods)
IntroductionAlpha Omega Custom In-Ear or better known as AO for short has enjoyed excellent spell during recent times, seeing brand new handcrafted models of custom in-ears rolling out of their production line. Entering midway during 2023 last year, AO has released four new models such as the Voyager, a collaboration project with Hillaudio Malaysia which I have covered last time. Next, was the Indomitus, followed by the continuation of their flagship sequel, Omegon MKII and lastly the latest one which I will be reviewing this time, is the Alpha Omega Ra. Every time AO released a brand new model, I cannot help myself being excited and eagerly anticipated to try out the models for myself.
Luckily, with the help of my audio buddies that I have met online, I was kindly offered to test and review the Alpha Omega Ra at my own comfort. Huge shout-out and appreciation for the kind offer. At the heart of this earpiece, AO has presented to us 7-drivers total of tribrid design for the Ra. Combining one beryllium plated dynamic-driver, 4 Sonion balanced armatures for its low-mid and midrange frequencies and lastly 2 Sonion electrostatic drivers for the treble feeded through an in-house developed 4-way passive crossover. While that may seem mouthful enough to say, this whole package comes with a price tag of only RM2668 or equivalent to US$563 (rounded-off). Hence, with that let’s get on with the review.
Unboxing Experience
Packaging of the Ra was minimal and straightforward, similar to most of AO offering in their catalog albeit midrange or flagship models. Presentation was overall basic whereby there is no such premium feature when compared to other brands. Nonetheless, what is more important is certainly what’s inside the package and the monitors itself. On the sleeve cover there is a branding logo on the front, a specification list and a diagram of the frequency response at the back. By sliding the sleeve either top or bottom unveils the main box.
Flipping the main box cover, unveils the monitor itself placed snug inside a thick foam cut out. As we explore further AO have included in the package, one custom made premium casing made from faux leather complemented with a well-padded velvet upholstery in the inside to store your monitors. Stored in the casing as well is the stock cable and 3 pairs of silicone eartips that what seems to be similar of AT07 eartips which comes in various sizes (S,M,L).
Cable
AO has certainly hit the nail on the head with the cable aesthetics, which further compliments the overall aesthetics of the Ra. In terms of the build and material, AO went to choose a 4 core, gold plated silver cable which, I reckon are SPC cables. Hands on experience using the cable was overall great, similarly to other AO monitors which I have tried in the past, such as the Lambda, Iota and Omegon MKI. The cable is insulated with a soft pliable yellowish PVC material which further radiates its golden charm. Braiding quality on this are neat and fairly secure, the connectors are made out of lightweight stainless steel. At the end of each 2-pin connectors, there are no such indication of “L” or “R” other than the plastic bit which holds the two tiny pins in red and clear.
Specifications
- Driver(s): 1 Beryllium Plated Dynamic-driver, 2 Sonion Low-mid BA, 2 Sonion Mid BA, 2 Sonion EST Drivers with 4-way Passive Crossover
- Impedance: 28 Ohms
- Sensitivity: 105dB/SPL
- Frequency Response: 10Hz-40kHz
- Cable: 4 core, gold plated silver cable, 2-pin (0.78mm) to 3.5mm connectors
Build and ComfortWith there are being so much drivers cramped inside the Ra, it is no surprise to see this monitor to have such large shell which are made with premium resin using a custom made universal mold. The motive chosen by AO to decorate this earpiece is inspired by galaxies or milky way given that the overall colour language were predominantly white with a touch of pinkish hue and golden glitters. Of course, customers can opt to add their own touch of creativity to design their own customized earpiece via personal consultation. But even for the universal variant, the artwork quality for Ra looks absolutely stunning and gorgeous.
One notable feature aspect that strikes me the most when inspecting the design for the Ra was the existence of large vent port on each side of the monitor, positioned next to the 2-pin connectors. Curious with my finding, I brought the matter into a discussion among audiophile buddies including Clement, the man behind Alpha Omega inside a small WhatsApp group chat. Little did I knew, my wild guess of the “secret sauce” was true, a similar feature of FIR Audio’s ATOM Venting technology. Which AO call it as Alpha Omega Proprietary Venting System that reduces pressure build up in a sealed ear canal, hence provides greater comfort, less ear fatigue and indirectly affects the overall bass delivery which I will further explain in sound evaluation.
The overall texture of the shell is smooth to the hand and polished. At the nozzle end however it was not quite refined as there are some unevenness when compared to other IEMs I tried recent times that shares similar build material. Even though comfort varies across users, I personally consider the design was very comfortable and ergonomic with an out sticking design on that acts like a supporting feature that naturally slides into my concha ensuring a snug and secure seal when using the IEM. The feather light build allows me to use the Ra comfortably, even for long hours. Analyzing inside of the earpieces, seeing all of the wiring are neat and professionally made albeit the inside cavity is apparently empty. Hence, it is best to not drop these gorgeous earpieces from tall height or onto hard surface since to avoid serious damage to the internal components.
Test Equipment
- Local Hi-Res files > Astell&Kern SE100 M.Chat (Linear Phase Fast Roll-off Filter)
- Tidal (Master) + Local Hi-Res files via Sony Music Centre > Sony Xperia 1 V (DSEE Ultimate + Dolby Atmos - OFF)
Power RequirementsWhen looking through the specification numbers, the Ra seems to be a friendly monitor to be driven directly through a smartphone. Although the case is true, this IEM does benefit from higher output number as greater dynamics can be achieved when properly amped.
Driving it straight from my Sony Xperia 1 V, I had to turn up the volume between 10-13/30 to achieve a comfortable listening experience. Plugging the Ra into my Astell&Kern SE100 on both balanced and unbalanced output requires me to turn the volume wheel up to 60-70/150 on unbalanced, meanwhile on balanced requires me to dial downwards to 50/150 at most.
Initial Impression
Frequency response for Ra, taken from Alpha Omega Official Instagram page.
Alpha Omega Ra is a mildly V-shaped pair of monitors that exudes warm, musical sound signature with prominent emphasis mainly in the sub-bass region. Approximately, the graph starts at least from +13dB in the 20Hz frequency which then gradually drops before 500Hz frequency. This results to a warm tonal balance, rich and coloured sound, however Ra does not sound weak at all in the higher frequencies. Upper-mids and top end of the frequencies are elevated a couple decibels shy below the bass shelf.
Moreover, pinna region on Ra is scooped out by a few decibels to keep preserve vocal naturalness which I appreciate the most. Past the 10kHz frequencies however, I could notice Ra fell short to present better than average treble extension even when compared to my dual-BA reference Audio Technica ATH-IM02. Regardless, the usage of EST in this earpiece, added with the vent ports fortunately, kept the Ra in the game because this IEM has tons of detail retrieval, good resolving treble and excellent airiness.
Low Frequency (Bass)
Being its most valuable asset and strongest attribute, Ra has an absurdly deep low rumbling bass and wide extension in the upper-bass to lower-mids. The elevated sub-bass produced by the single beryllium plated DD gives the Ra a powerful subwoofer effect, capable of rendering detailed textured low-bass without any sort of muddiness. While mid-bass and upper-bass delivery has moderate speed, bass slam resembles a thick yet airy “thud” sound rather than boomy, which was a false assessment. Each bass slam has an emphasized note weight and impact due to the boosted sub-bass, additionally bass decay and transients are slow and extended providing slightly above average depth reach from the loudest to the quietest of bass
Coming back to my earlier comment regarding the functionality of the large vent port on Ra, this similar feature to FIR Audio’s ATOM Venting system allows the Ra to produce not only the deep rumble sub-bass and keeping internal air pressure at bay, but it is also responsible for the natural dispersion for each bass slam. It can be quite difficult to explain it in words but a simple test you can do is by covering the vent ports with blu tacks or tape. From my own analysis, I could hear there was a noticeable amount of resonance within the chamber with the mid-bass hits with a slight more aggressive.
Middle Frequency (Mid)
Despite the Ra could be considered as a bass heavy and many might associate it to an overly warm, dark sound. It was not entirely the case with Ra, the lower-mids blends superbly with the excess upper-bass. That being said, the midrange handled by four Sonion balanced armature units are tuned slightly north to neutral in terms of tonal balance.
Moving into the 1kHz frequency and above, AO did a fairly stunning job to keep the midrange fairly forward, natural with excellent presence for such tuning without being overwhelmed by the heavy bass. In the upper-mids, Ra in my opinion has a proper pinna gain, which I reckon AO did manage to scoop a couple decibels from frequencies around 2k-3.5kHz without sacrificing detail within the midrange considering this is a smoother tuned monitor.
High Frequency (Treble)
Treble tuning of Ra has a decent amount of sparkle and energy which honestly I was expecting a bit more considering AO has opt for dual Sonion EST drivers. But either way, the treble was still crisp, very capable gushing out low and high level of detail. To add onto that as well, I also did test Ra with some of my sibilant test tracks and it performed wonderfully well to keep sibilant under radar.
However, treble extension was where I personally felt Ra was lacking, due to that instruments that is played at high frequencies does not feel quite realistic. Comparatively speaking, while I was swapping back and forth with my reference monitors, Audio Technica ATH-IM02. In summary, if you prioritize treble satisfaction then these may not suit you, but if you’re in the market for something with strong bass, high musicality and without losing detail, Ra does it exceptionally well.
TechnicalityFrom a technical perspective, soundstage on Ra was average at best. There was decent amount of width but in terms of height, it was surprisingly tall. Interesting enough, due to the exceptional level of airiness coming from the vent ports, I initially thought Ra has a wide soundstage until I went on and play a couple more tracks to confirm my evaluations. Spatial imaging was sligthy above average, it was quite accurate but not quite as good when compared to the likes of Etymotic Evo which unfortunately I could not compare thoroughly in this review. Regardless, Ra separates handles various elements playing simultaneously well even with busier tracks, it does not sound congested nor resulting to melding. Layering was average at best, due to the lack of depth some of the instruments and other elements included are pushed into the same row.
Although the tuning on Ra prioritizes smoothness and musicality, these does not felt lacking in detail. Macrodetails and small nuances are present yet not overdone, however the overall resolution was only as far as average. Lastly, wraping it off with the dynamic range test for Ra is rated at average. Utilizing the Ultimate Headphone Test - ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, Ra was able to produce an audible 5 out of 7 counts.
Comparison(s)
- Audio Technica ATH-IM02
Even from the graph one could tell that Ra is much bassier than the IM02 by a long shot, pretty much beats it easily in the bass department with ease. That being said, IM02 provides better resolution and overall cleaner bass response compared to Ra which has a slight bass bleed into the lower-mids. In the midrange and treble, is where the IM02 shines due to the differences in its tuning.
Upper-mids are much more forward, natural and analog sounding, however Ra handles midrange detail a tad better with blacker background. Treble on both monitors are similarly relaxing and very smooth. Unfortunately, as I mentioned about the lack of extension on Ra was also where the IM02 simply outshines it including other technical aspects such as detail resolution, dynamic range and soundstaging.
- Etymotic Evo
For this one, I have to do it by memory since I only manage to compare both of these side by side for less than 10 minutes. Hence, I will not go into detail regarding these two and only compare the attributes that I could recall. Most obviously when comparing both, soundstaging, detail retrieval and resolution on Evo was night and day clearly blows Ra out of the park.
Both monitors does go deep into the sub-bass, however Ra does a better job at definition and packs more weight but Evo handled texture a tad better and detailed. Midrange was obviously leaner with colder tonal balance on the Evo. Treble was much more exciting and crisper on Evo, while Ra had a fuller treble note. Both monitors have similar problems when it comes to treble extension, but Evo has a slight advantage over Ra.
Eartip Combination(s)
AO Ra with the provided stock pair of eartips which were used throughout the sound evaluation.
- E Pro EP00
One of my favourite pairing combination with the Ra, great increase in the midrange quality, vocals are much more forward with better clarity. Bass slam were tighter and controlled. Treble is a tad subdued but in return, it yields greater treble extension and much natural soundstage, airiness were not affected in any negative manner.
- Azla Xelastec
Also my favourites, sounds similar to the EP00 for most parts, although treble is much crisper, more sparkle and detail retrieval with these. Airiness stays similar but with soundstaging sounded a tad boxy. Provides much secure seal and requires less adjustment into the ear canal compared to EP00.
- Tangzu Tang Sancai (Balanced)
Sounds most balance with the Ra, bass slam feels woolly, rounded and immersive. Midrange is still recessed but brought slightly forward than stock.
- Triple Flange
Similar to Tang Sancai, kept most of the bass quantity. The difference between both is that triple flange sounds a tad tighter. Soundstaging however, was the narrowest out of the bunch, but instead you will get the best detail retrieval due to its being closer to eardrum.
- Dunu S&S
Decent combination, sounds similar to stock but with slightly much forward midrange. Treble were splashy unfortunately.
Purchasing Links and Where to GetAlpha Omega Official Website
https://www.alphaomegaciem.com/ra
ConclusionWhile I was sitting down and just take a moment to appreciate a sound signature that is north by miles away from my flat neutral preference. I could see how Ra would slot itself quite easily to those who would want an upgrade from for example, Thieaudio Hype 2 or such monitors that is similar to that and definitely for bassheads as well. Ra was definitely also sound way different to the last couple of models from AO I have tested from the past. It felt much more safer, friendly and forgiving compared to the Lambda, Zeta, Iota or even their first flagship Omegon MKI. Considering the amount of premium components you would get, such as dual Sonion EST units (per side) below $600 price tag, comparatively less than how much other premium brands would offer does make it a good deal.
Despite some setbacks, Ra is still in my opinion a very good pair of in-ear monitors goes absolutely perfect for relaxing, casual listening when you’re commuting and need something in your ears that sounds good. The Ra has a mildly V-shape curve, while some might assume its U-shape by referring from the official graph. Regardless, main point here it that Ra could provides listener a full blanket of warm bass due to the elevated +13dB sub-bass region. Bass slams are also powerful with great depth yet still nicely articulated. AO’s clever tuning allows the midrange and upper-mids on Ra to maintain good forwardness and naturalness, thanks to the scoop within pinna gain area. Last but not least, the implemented in-house developed pressure venting system allows the Ra to sound airy and overall absolutely pleasant to hear.
As a final thought, I’m thoroughly glad that AO has come out with new releases, expanding their catalogue and improving their portfolio gathering fans from inside and outside of the country. Thus, wrapping up my review for this time and hopefully we will see more interesting releases from Alpha Omega in the future!
Test Tracks
Untuk Perempuan Yang Sedang Di Pelukan - Payung Teduh 44.1kHz
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
The Devil in I - Slipknot44.1kHz
Hunter – Björk 44.1kHz
Hollow (16-Bit Remix) – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 44.1kHz
Rythm - Jamey Haddad; Lenny White; Mark Sherman 44.1kHz
Kimigatame - SuaraDSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
In My Room - Hikaru Utada 44.1kHz
Colors (Live in Studio) - Black Pumas 192kHz
Timbres – Yosi Horikawa 44.1kHz
Aquatic Mouth Dance – Red Hot Chilli Peppers 192kHz
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n0varay
New Head-Fier
Pros: > Premium aesthetics, quality build and material
> Thick angled earpads provide a comfortable wearing experience
> Easy to drive
> Neutral, reference flat tuning
> Highly detailed
> Forward, intimate warm midrange
Cons: > Slightly rough in terms of finish, mainly on the head structure
> Lacking treble extension
AUNE AR5000 - Fruitful Venture Into The Unprecedented
Disclaimer
- The reviewed Aune AR5000 is a personal unit. Thus, all opinions are original ideas and there is zero influence from any 3rd party or external opinion.
- No EQ or filter presets were used during the entire review period.
- Sound evaluations are strictly conducted under neutral and does not include 3rd party accessories (ie; eartips/earpads, cable, reversible mods).
IntroductionAune is a brand that has been in the Chi-Fi market for as long as one could remember back when one first began foraying into this hobby, having own their X7s which I had use as a reference amplifier back then. Known vastly for their desktop headphone amplifiers and DACs, Aune has made some top quality bangers such as the S7 Pro, X8 Magic DAC and much more. That being said, in recent times Aune has once again stepped their foot as an active player once again with some of their new releases such as the AUNE Yuki dongle DAC/AMP, X1s GT DAC, and X8 XVIII BT Magic DAC.
However, with me in this review is the recently released and Aune’s first-ever venture into full-sized headphone segment, which is the AR5000. Priced at $299 on their store and Amazon, the AR5000 features a fully open-back structure with dual detachable cable design and at the heart of this headphone is equipped with a large 50mm dynamic driver alongside a newly developed MLD (Multi-Layer Distributed) diaphragm, tilted driver placement and plenty more features which can be found on their official website.
Unboxing Experience
Simplicity and elegance, are the words best to describe the whole unboxing experience of the AR5000. To start off, the headphone came in a fairly large and heavy box with the outer layer is a piece of cardboard that slides outward revealing the actual packaging which stores the headphone itself.
But first, let us view at the outer packaging itself that can be seen has an embossed printing of the actual headphone. While on the sides and back, can be found the lists of specifications, including all of the branding, technologies and marketing details for the headphone. Now, moving to what is inside the box is the gem itself, the AR5000 resting elegantly and snug in its heavily padded throne covered with high quality golden satin fabric. Aune definitely has thrown everything all out through the roof, in terms of presentation for the AR5000.
Additionally, there is a dual 3.5mm terminated to a single-ended 3.5mm jack cable included as well. Which can be found inside a cardboard box compartment below the headphone that also features an embossed printing of the AR5000 model.
Specifications
- Driver: 50mm dynamic driver, MLD (Multi-Layer Distributed) diaphragm
- Impedance: 28 Ohms
- Frequency Response: 5-41800hz
- Cable: 4 core, OFC (Oxygen-Free Copper), dual 3.5mm to 3.5mm, 1.5m length cable
- Weight: 350g
Purchasing Links and Where to GetAmazon link:
https://www.amazon.com/Aune-Full-Size-Headphones-Detachable-Audiophile/dp/B0CLPC7Q2S
Aune Store:
https://www.aune-store.com/en/aune-ar5000-open-ear-headphone_110208_1240/
Build and ComfortFeaturing a open-back and bulky design yet weighing at just 350 grams, the AR5000 somewhat still manages to place itself within the lightweight category thanks to its build. Aune mostly utilizes high-grade plastic components as what you would find in similarly priced headphones for majority of the parts such as the earcups, headband adjustment mechanism. Aune also has opted for metal on the headband structure, yoke and grills which protects the driver housing. Despite that being the case, the finishing on metal parts mainly are finished poorly and rough, which potentially might cut through your skin if its not handled cautiously. Each respective side of the yoke has an indicator, written “L” and ”R” for users to recognize the appropriate direction for use and plugging In the cable.
Additionally, the headband itself is made out of polyurethane (PU) leather which distributes the weight of the headphone exceptionally well. The pre-attached angled hybrid earpads are easily replaceable without any sort of proprietary locking mechanism. The earpads are made with fenestrated PU leather on the outer wall and mesh interior. It is fairly thick and has a large cavity which can fit four knuckles quite easily, the angled driver design also ensure most ears does not come in contact directly with the driver housing.
Clamping force is fairly secure and snug, although the AR5000 presence is noticeable throughout the whole usage. Its overall weight distribution and comfortable earpads provides a superbly pleasant experience. Likewise with many other headphone that shares similar design, the AR5000 does not isolate external noise. Due to its open-back design as well, this headphones leak sound fairly easy, hence its best to keep this headphone indoors to fully appreciate the sound quality that this headphone has.
Cable
Apart from the original stock, Aune was generous enough to include their recommended upgrade balanced cable for the AR5000 as a free gift, which is the Aune AR3. Regardless, straight out of the package users will get a dual 3.5mm to 3.5mm single-ended termination. AUNE does not specify what kind of material they have used for the stock cable in the specification sheet. Nonetheless, it features a two-braid cable, covered in fabric insulation, measured at 1.5 meter in length which is standard. Each end of the connectors including the Y-splitter are made out of metal with a brushed matte finish. Plus, each side of the jacks are also indicated “L” and ”R” on each side of the connector housing. Overall, it is a good quality, lightweight and beautifully made cable, although that being said it is slightly microphonic when in contact with fabric.
Next, onto the Aune AR3 cable which is sold separately that can be found on their website, selling for a reasonable price of $80. According to their website, this cable features a heavier four-braid, 6N OCC (Ohno Continuous Casting) with Litz Type 2 copper cable. Again, dual 3.5mm connectors both indicated for each side but only this time it is terminated to a 4.4mm Pentaconn plug. Other than that, the overall finish on the connectors and Y-splitter is decorated with a shinier stainless steel housing which looks gorgeous under the lights. The AR3 eliminates all of the microphonic problem that the stock cable has, since it is insulated with soft TPEE material that feels a tad tacky to the touch.
For those who might question about sonic differences or cable geeks, on multiple listening test conducted, switching back and forth between the cables. The AR3 provides better resolution, better separation and looser mid-bass impact compared to the stock cable by a small margin.
Test Equipment
- Local Hi-Res files > Astell & Kern SE100 M.Chat (Linear Phase Fast Roll-off Filter > 2.5mm balanced output)
- Tidal (Master) + Local Hi-Res files via Sony Music Centre > Sony Xperia 1 V (DSEE Ultimate + Dolby Atmos - OFF)
- Lenovo Legion 5 (Nahimic - OFF) > foobar2000 > Chord Mojo 2
Power RequirementsDespite its large drivers and beefy appearance, the AR5000 is in fact a superbly efficient pair of headphones which can be driven optimally through most devices including the Sony Xperia 1 V which has a considerably underpowered amplifier for most full-sized headphones.
Driving it through the A&K SE100 on 2.5mm balanced connection which has a decent 4.1 Vrms of output power, the AR5000 sounds loud and crystal clear at 35-40/150 on the volume wheel for my personal listening. Thus, most modern dongles should have absolutely no problem to provide enough juice to make this headphone really sing its heart out.
Initial Impression
“Wait, this sounds oddly familiar?”
That was the question I asked myself first time hearing the AR5000. Wacky as it seem, it reminds me so much to the legendary Sennheiser HD600 series which has been the gold standard, for audiophiles of all extend. Glad that I finally have tried all models in the series not too long ago, during my recent visit to the store.
Before someone would make any dubious speculation, it does not mean Aune was trying to imitate the HD600 series. Perhaps, one can say it is inspired by the veteran because despite the similarities, the AR5000 has a character of its own especially in the upper-mids and treble range which made this pair distinctively different. The overall sound signature is reference neutral and tuned as flat as it can be. Sub-bass roll-off has a slightly early roll-off yet at the same time still warm and lush, reminiscent to the HD600 series except the AR5000 does not sound neither velvety or as smooth as its counterpart. It sounded a tad more gritty, somewhat emphasized not deliberately yet still creates an over-sharpened image within the 2.5k-5kHz region.
Low Frequency (Bass)Reference tuning often prioritize neutrality and the importance of unaltered reproduction of sound as minimal as it can, especially within the low frequency region. This applies towards the overall bass for the AR5000, it has a flat, reference-like sounding bass with minimal colouration which is perfect for monitoring and mixing use. Do not be mistaken reference neutral to be sterile or cold, because the AR5000 is clearly none of those. The overall timbre and tonality is surprisingly warm, natural and lifelike.
Due to the aforementioned early sub-bass roll-off, the AR5000 does definitely struggles to deliver satisfying level of thick rumbling low-bass performance. Regardless, the gentle rumbling effect that this headphone could do has good amount of definition and texture at macro and micro levels. For example, during the first 30-seconds entering the track Hollow (16 bit Remix) – Björk, the AR5000 renders the deep rumbling sub-bass effect pristine, as the large 50mm dynamic drivers deliver macro details and texture competently.
Furthermore, shifting slightly higher into the mid and upper-bass region, the AR5000 has more than sufficient energy to present tight and controlled bass impact which resembled in a polite “thud”. Since this headphone fell short in terms of bass extension as well, this indirectly affect the overall dynamics and depth. 7 rings - Ariana Grande, is an exemplary example to test the capability on bass slam and delivery. In this song, bass transients for this headphone which is the length of reverberation from loudest to quietest was short, tactile with average layering.
Middle Frequency (Mid)Midrange is the key strength on this pair, whereby tonal balance or colouration in the mids were mainly on the warmer side. Vocals are superbly articulated, natural sounding and detailed. Similarly for string instruments and percussion, timbre was accurate with instruments are easily distinguishable and note weight were also above my expectations, harmoniously balance between organically warm and reference flat. Listening to First Love - Hikaru Utada and Kokoroe (FROM THE FIRST TAKE) - Uru was an absolute bliss and thoroughly impressed by how the vocals are separated with forward warm presentation and pristine. However, due to the upper-mid boost the AR5000 it may sound a tad too forward and not as velvety which can be solved through EQ by lowering frequencies between 2.5k-5kHz.
High Frequency (Treble)Overall, as per said in the initial impression the top-end on AR5000 does sound similar of the Sennheiser HD600, but not entirely the same either. The AR5000 has a pleasant lively treble, fairly crisp with good treble energy. Detail is astoundingly good and forgiving even with poorly recorded tracks, plus devoid from any sibilant within the 5k-8kHz region. Sound of crashes, hi-hats in such tracks like Anesthetize – Porcupine Tree and violins in Underground – Lindsey Stirling reproduced by the AR5000 has good energy and a tad edgy texture, which one does not see as any sort of negativity as it aids to highlight contour of note weight and timbre of those elements.
Furthermore, treble extension is marginally lacking resulting shorter and faster roll-off in the upper-treble range but still maintains good level of airiness, keeping the ambience natural and roomy.
TechnicalityAune AR5000 achieves balance harmony between pleasure and competent level of technical prowess. When it comes to detail retrieval, the AR5000 provides it so effortlessly without being too clinical, like squinting into a magnifying glass. Macro and microdetails are in every song are audible, although that being said the overall resolution this headphone produce was average at best. Soundstaging and spatial imaging were average at best, yet natural thanks to the fully-open back design, nevertheless the width of the soundstage generated by this pair is greater compared to it’s depth. Rhythm – Jamey Haddad; Lenny White; Mark Sherman is a regular track to test these criteria, the AR5000 was able to present high and low levels of details in this binaural recording. Entering midway into the track, the AR5000 renders the movement of cowbell, castanets and maracas being hit while moving were accurate but not at pinpoint level of resolution.
Additionally, the AR5000 possesses very good separation capability elements are all neatly presented and cohesive hindered from any melding. In Aquatic Mouth Dance – Red Hot Chili Peppers to test the separation that the AR5000 could produce, every elements in this track are audible and separated from each other from the start till the closing stages of the track which is the bussiest part, the AR5000 shows no sign of melding. Lastly, the dynamic range test for the Aune AR5000 is rated at average. Utilizing the Ultimate Headphone Test – ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, the AR5000 was able to produce an audible 5 out of 7 counts.
Comparison (s)
AKG K550 MKI ($300)
- AR5000 relishes a much reference flat tuning compared to the K550, which has an emphasized bass and heavier bass slam. Sub-bass texture is much more complex with greater resolution on the K550, but the AR5000 in the other hand present tighter and faster bass transient.
- Due to the bassier approach, midrange on the K550 sounded a tad recessed and less forward but positively this old yet still competent performer from 14 years ago, has a much velvety upper-midrange. Both headphones handles vocal very well, detailed and clean, but AR5000 has a warmer, richer tonal balance compared to the K550.
- Treble is noticeably much brighter and sparkly with greater extension and dynamic range on the K550. Despite being a closed-back headphone, the K550 has a wider width and deeper depth in terms of soundstaging but not at natural sounding likewise with the AR5000. Additionally, the K550 has better detail resolution whereas the AR5000 has a much superior detail retrieval capability. Overall, its fascinating to see how much the AKG still fares head-to-head against a technologically advanced headphone such as the AR5000.
ConclusionAune has ventured into unscathed segment with a strong statement with the AR5000. Although, this pair is regarded as a neutral, reference tuned headphone. It can certainly blend with most genres and apparently versatile for both reference task and for pure music enjoyment. I can imagine that the AR5000 would pair very well with OTL tubes amplifiers, while tuning into some warm, comforting all-time favourite tunes for hours without feeling any discomfort.
That being said, perhaps Aune could place a bit more emphasis on improvising and refine the overall finish of their future product. Despite this being their first ever foray into the headphone market, one could not help but thoroughly impressed with the overall quality from the presentation, material chosen for the build and tuning itself at an affordable price. Thus, that wraps up my review this time, hope it helps and see you all in my next review.
Additional Test Tracks
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
Hunter – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 48kHz
Kimigatame - Suara DSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
Artemis - Lindsey Stirling 44.1kHz
Timbres – Yosi Horikawa 44.1kHz
Poster Child – Red Hot Chilli Peppers 192kHz
Attachments
Last edited:
n0varay
New Head-Fier
Pros: > Superb build quality
> Ergonomic, comfy shaped shell
> Fully accessories
> Fun, warm timbre and tone
> Decent overall clarity
> Superb musicality
> Amazing bass amount and response with a deep bass
> Good sub-bass extension
> Good transparency
> Energetic, airy high range
> Intense, fun treble
> Good overall technicalities
> Good soundstage width and height
Cons: < Recessed midrange
< Slight BA timbre
< Average resolution
< Needs a good and powerful source matching
< Not a clinical performer
< Not for monitoring
< Cables a little cheap looking
< Competitive market and price segment
< Might be too bassy or too piercing with certain sources
BASN Metalen - Caffeine For Ears
Disclaimer
BASN which stands for ‘Be A Sincere Newcomer’ is actually not a newcomer in this audio industry but they were established way back in 2009 by an audiophile enthusiast, Louis Lee and they are based in California, USA. They are rarely mentioned here in the audiophile scene in Asia but BASN is quite well known in the west for producing in ear monitors for musicians and producers alike. They have a wide catalogue of products that includes a portable vinyl player and a microphone as well. Perry from BASN has contacted us to introduce our community with their brand and we are thrilled to have this opportunity as we at Audiomonsta are keen to find hidden gems all around the globe for us all to enjoy. BASN has kindly sent us a pair of their 4 drivers IEM, the Metalen for a review and we are truly grateful for the opportunity given. How will they fare in this ever growing portable audio scene? We shall find out here.
Functions & SpecificationsBefore we start the review, here are the specifications of the BASN Metalen;
- Drivers: 2 x 10mm dynamic + 2 balanced armatures
- 18 Ohms, 102 dB Sensitivity
- 20 - 20 khz Frequency Response Range
- CNC Precision titanium Alloy
- Lightweight Ergonomic Design
- 2 recessed MMCX silver plated cables (1 x with mic, 1 x 4 core single ended)
- In green or blue colour
The BASN Metalen can be purchased from their store and Amazon;
https://www.amazon.com/dp/B0BXPF7VLM/ref=twister_B0BXPJ57JP?_encoding=UTF8&th=1
https://www.basnaudio.com/
Packaging & AccessoriesThe packaging here is a simple, straightforward type of retail packaging that looks professional steering away from those over the top anime themes. They are packed like a well established company package with their information on the back inside a medium small box. Inside we will find a plethora of accessories that is worthy of it's asking price which includes 3 pairs of foam tips, 3 pairs of silicone tips, a cleaning tool, a 6.35mm converter, 2 basic cable which consists of 1 with microphone and 1 braided single ended cable, a zipper hard case and the IEM itself. The Metalen is fully accessorised indeed and very neatly packed.
DesignThe design is an ergonomic shaped shell that is quite small in size and they fit into the ear concha snugly giving a superb comfort that is suitable to wear for a long listening session. The Metalen is a CNC machined titanium alloy build that is what I would call solid, seamless and feels premium on hands with a slight weight on it. The overall build is impressive to say the least with their brand logo imprinted on the faceplate. BASN also claims that the titanium alloy that they used is also great in controlling the resonance problem to create a clearer overall sound.
The Metalen is equipped with 4 drivers which consist of 2 dynamic drivers along with a dual balanced armature. The dynamic drivers are dual 10 mm drivers that are in charge of the lower frequencies towards the midrange along with 2 balanced armature fixed near the nozzle where 1 driver is in charge of the mid to highs region and another for the high region.
The nozzle is rather large in diameter and they are fitted with a metal mesh for protection. There are 2 vents near the nozzle and another vent at the inside of the body providing a well vented IEM that possesses zero driver flex.
There are a total of 6 pairs of eartips that consist of 3 pairs of black foam tips and 3 pairs of silicone eartips in normal size bore all in small, medium and large sizes.
They come with a silver metallic zippered hard case that is made with some type of fabric that mimics a steel case. They do offer a great protection for the IEM and are practical for everyday usage.
The Metalen has a protruding type of MMCX plugs that is quite different to minimise the swivelling effect of normal MMCX plugs but other 3rd party MMCX can be used without any problems.
There are 2 types of silver plated cable included in the package where 1 straight cable with a 3 button microphone that has a rubbery body and they are quite sticky to the touch and another single ended cable in 3.5mm 4 core braided cable. Both of these cables are fitted with ear guides with memory metal inside to form a better fit on your ears. The cables honestly looked a little on the cheaper side and I would prefer a single good quality cable instead of 2 cheaper ones.
Gears Used for Comparisons
- Shanling M6 Ultra
- Fiio Q7
- Questyle M15
- Hiby FC6
- FiiO BTR7
- Intime Sho DD
IntroductionAlpha Omega Custom In-Ear or better known as AO for short has enjoyed excellent spell during recent times, seeing brand new handcrafted models of custom in-ears rolling out of their production line. Entering midway during 2023 last year, AO has released four new models such as the Voyager, a collaboration project with Hillaudio Malaysia which I have covered last time. Next, was the Indomitus, followed by the continuation of their flagship sequel, Omegon MKII and lastly the latest one which I will be reviewing this time, is the Alpha Omega Ra. Every time AO released a brand new model, I cannot help myself being excited and eagerly anticipated to try out the models for myself.
Luckily, with the help of my audio buddies that I have met online, I was kindly offered to test and review the Alpha Omega Ra at my own comfort. Huge shout-out and appreciation for the kind offer. At the heart of this earpiece, AO has presented to us 7-drivers total of tribrid design for the Ra. Combining one beryllium plated dynamic-driver, 4 Sonion balanced armatures for its low-mid and midrange frequencies and lastly 2 Sonion electrostatic drivers for the treble feeded through an in-house developed 4-way passive crossover. While that may seem mouthful enough to say, this whole package comes with a price tag of only RM2668 or equivalent to US$563 (rounded-off). Hence, with that let’s get on with the review.
Unboxing Experience
Packaging of the Ra was minimal and straightforward, similar to most of AO offering in their catalog albeit midrange or flagship models. Presentation was overall basic whereby there is no such premium feature when compared to other brands. Nonetheless, what is more important is certainly what’s inside the package and the monitors itself. On the sleeve cover there is a branding logo on the front, a specification list and a diagram of the frequency response at the back. By sliding the sleeve either top or bottom unveils the main box.
Flipping the main box cover, unveils the monitor itself placed snug inside a thick foam cut out. As we explore further AO have included in the package, one custom made premium casing made from faux leather complemented with a well-padded velvet upholstery in the inside to store your monitors. Stored in the casing as well is the stock cable and 3 pairs of silicone eartips that what seems to be similar of AT07 eartips which comes in various sizes (S,M,L).
Cable
AO has certainly hit the nail on the head with the cable aesthetics, which further compliments the overall aesthetics of the Ra. In terms of the build and material, AO went to choose a 4 core, gold plated silver cable which, I reckon are SPC cables. Hands on experience using the cable was overall great, similarly to other AO monitors which I have tried in the past, such as the Lambda, Iota and Omegon MKI. The cable is insulated with a soft pliable yellowish PVC material which further radiates its golden charm. Braiding quality on this are neat and fairly secure, the connectors are made out of lightweight stainless steel. At the end of each 2-pin connectors, there are no such indication of “L” or “R” other than the plastic bit which holds the two tiny pins in red and clear.
Specifications
Build and ComfortWith there are being so much drivers cramped inside the Ra, it is no surprise to see this monitor to have such large shell which are made with premium resin using a custom made universal mold. The motive chosen by AO to decorate this earpiece is inspired by galaxies or milky way given that the overall colour language were predominantly white with a touch of pinkish hue and golden glitters. Of course, customers can opt to add their own touch of creativity to design their own customized earpiece via personal consultation. But even for the universal variant, the artwork quality for Ra looks absolutely stunning and gorgeous.
One notable feature aspect that strikes me the most when inspecting the design for the Ra was the existence of large vent port on each side of the monitor, positioned next to the 2-pin connectors. Curious with my finding, I brought the matter into a discussion among audiophile buddies including Clement, the man behind Alpha Omega inside a small WhatsApp group chat. Little did I knew, my wild guess of the “secret sauce” was true, a similar feature of FIR Audio’s ATOM Venting technology. Which AO call it as Alpha Omega Proprietary Venting System that reduces pressure build up in a sealed ear canal, hence provides greater comfort, less ear fatigue and indirectly affects the overall bass delivery which I will further explain in sound evaluation.
The overall texture of the shell is smooth to the hand and polished. At the nozzle end however it was not quite refined as there are some unevenness when compared to other IEMs I tried recent times that shares similar build material. Even though comfort varies across users, I personally consider the design was very comfortable and ergonomic with an out sticking design on that acts like a supporting feature that naturally slides into my concha ensuring a snug and secure seal when using the IEM. The feather light build allows me to use the Ra comfortably, even for long hours. Analyzing inside of the earpieces, seeing all of the wiring are neat and professionally made albeit the inside cavity is apparently empty. Hence, it is best to not drop these gorgeous earpieces from tall height or onto hard surface since to avoid serious damage to the internal components.
Test Equipment
Power RequirementsWhen looking through the specification numbers, the Ra seems to be a friendly monitor to be driven directly through a smartphone. Although the case is true, this IEM does benefit from higher output number as greater dynamics can be achieved when properly amped.
Driving it straight from my Sony Xperia 1 V, I had to turn up the volume between 10-13/30 to achieve a comfortable listening experience. Plugging the Ra into my Astell&Kern SE100 on both balanced and unbalanced output requires me to turn the volume wheel up to 60-70/150 on unbalanced, meanwhile on balanced requires me to dial downwards to 50/150 at most.
Initial Impression
Frequency response for Ra, taken from Alpha Omega Official Instagram page.
Alpha Omega Ra is a mildly V-shaped pair of monitors that exudes warm, musical sound signature with prominent emphasis mainly in the sub-bass region. Approximately, the graph starts at least from +13dB in the 20Hz frequency which then gradually drops before 500Hz frequency. This results to a warm tonal balance, rich and coloured sound, however Ra does not sound weak at all in the higher frequencies. Upper-mids and top end of the frequencies are elevated a couple decibels shy below the bass shelf.
Moreover, pinna region on Ra is scooped out by a few decibels to keep preserve vocal naturalness which I appreciate the most. Past the 10kHz frequencies however, I could notice Ra fell short to present better than average treble extension even when compared to my dual-BA reference Audio Technica ATH-IM02. Regardless, the usage of EST in this earpiece, added with the vent ports fortunately, kept the Ra in the game because this IEM has tons of detail retrieval, good resolving treble and excellent airiness.
Low Frequency (Bass)
Being its most valuable asset and strongest attribute, Ra has an absurdly deep low rumbling bass and wide extension in the upper-bass to lower-mids. The elevated sub-bass produced by the single beryllium plated DD gives the Ra a powerful subwoofer effect, capable of rendering detailed textured low-bass without any sort of muddiness. While mid-bass and upper-bass delivery has moderate speed, bass slam resembles a thick yet airy “thud” sound rather than boomy, which was a false assessment. Each bass slam has an emphasized note weight and impact due to the boosted sub-bass, additionally bass decay and transients are slow and extended providing slightly above average depth reach from the loudest to the quietest of bass
Coming back to my earlier comment regarding the functionality of the large vent port on Ra, this similar feature to FIR Audio’s ATOM Venting system allows the Ra to produce not only the deep rumble sub-bass and keeping internal air pressure at bay, but it is also responsible for the natural dispersion for each bass slam. It can be quite difficult to explain it in words but a simple test you can do is by covering the vent ports with blu tacks or tape. From my own analysis, I could hear there was a noticeable amount of resonance within the chamber with the mid-bass hits with a slight more aggressive.
Middle Frequency (Mid)
Despite the Ra could be considered as a bass heavy and many might associate it to an overly warm, dark sound. It was not entirely the case with Ra, the lower-mids blends superbly with the excess upper-bass. That being said, the midrange handled by four Sonion balanced armature units are tuned slightly north to neutral in terms of tonal balance.
Moving into the 1kHz frequency and above, AO did a fairly stunning job to keep the midrange fairly forward, natural with excellent presence for such tuning without being overwhelmed by the heavy bass. In the upper-mids, Ra in my opinion has a proper pinna gain, which I reckon AO did manage to scoop a couple decibels from frequencies around 2k-3.5kHz without sacrificing detail within the midrange considering this is a smoother tuned monitor.
High Frequency (Treble)
Treble tuning of Ra has a decent amount of sparkle and energy which honestly I was expecting a bit more considering AO has opt for dual Sonion EST drivers. But either way, the treble was still crisp, very capable gushing out low and high level of detail. To add onto that as well, I also did test Ra with some of my sibilant test tracks and it performed wonderfully well to keep sibilant under radar.
However, treble extension was where I personally felt Ra was lacking, due to that instruments that is played at high frequencies does not feel quite realistic. Comparatively speaking, while I was swapping back and forth with my reference monitors, Audio Technica ATH-IM02. In summary, if you prioritize treble satisfaction then these may not suit you, but if you’re in the market for something with strong bass, high musicality and without losing detail, Ra does it exceptionally well.
TechnicalityFrom a technical perspective, soundstage on Ra was average at best. There was decent amount of width but in terms of height, it was surprisingly tall. Interesting enough, due to the exceptional level of airiness coming from the vent ports, I initially thought Ra has a wide soundstage until I went on and play a couple more tracks to confirm my evaluations. Spatial imaging was sligthy above average, it was quite accurate but not quite as good when compared to the likes of Etymotic Evo which unfortunately I could not compare thoroughly in this review. Regardless, Ra separates handles various elements playing simultaneously well even with busier tracks, it does not sound congested nor resulting to melding. Layering was average at best, due to the lack of depth some of the instruments and other elements included are pushed into the same row.
Although the tuning on Ra prioritizes smoothness and musicality, these does not felt lacking in detail. Macrodetails and small nuances are present yet not overdone, however the overall resolution was only as far as average. Lastly, wraping it off with the dynamic range test for Ra is rated at average. Utilizing the Ultimate Headphone Test - ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, Ra was able to produce an audible 5 out of 7 counts.
Comparison(s)
Upper-mids are much more forward, natural and analog sounding, however Ra handles midrange detail a tad better with blacker background. Treble on both monitors are similarly relaxing and very smooth. Unfortunately, as I mentioned about the lack of extension on Ra was also where the IM02 simply outshines it including other technical aspects such as detail resolution, dynamic range and soundstaging.
Both monitors does go deep into the sub-bass, however Ra does a better job at definition and packs more weight but Evo handled texture a tad better and detailed. Midrange was obviously leaner with colder tonal balance on the Evo. Treble was much more exciting and crisper on Evo, while Ra had a fuller treble note. Both monitors have similar problems when it comes to treble extension, but Evo has a slight advantage over Ra.
Eartip Combination(s)
AO Ra with the provided stock pair of eartips which were used throughout the sound evaluation.
Purchasing Links and Where to GetAlpha Omega Official Website
https://www.alphaomegaciem.com/ra
ConclusionWhile I was sitting down and just take a moment to appreciate a sound signature that is north by miles away from my flat neutral preference. I could see how Ra would slot itself quite easily to those who would want an upgrade from for example, Thieaudio Hype 2 or such monitors that is similar to that and definitely for bassheads as well. Ra was definitely also sound way different to the last couple of models from AO I have tested from the past. It felt much more safer, friendly and forgiving compared to the Lambda, Zeta, Iota or even their first flagship Omegon MKI. Considering the amount of premium components you would get, such as dual Sonion EST units (per side) below $600 price tag, comparatively less than how much other premium brands would offer does make it a good deal.
Despite some setbacks, Ra is still in my opinion a very good pair of in-ear monitors goes absolutely perfect for relaxing, casual listening when you’re commuting and need something in your ears that sounds good. The Ra has a mildly V-shape curve, while some might assume its U-shape by referring from the official graph. Regardless, main point here it that Ra could provides listener a full blanket of warm bass due to the elevated +13dB sub-bass region. Bass slams are also powerful with great depth yet still nicely articulated. AO’s clever tuning allows the midrange and upper-mids on Ra to maintain good forwardness and naturalness, thanks to the scoop within pinna gain area. Last but not least, the implemented in-house developed pressure venting system allows the Ra to sound airy and overall absolutely pleasant to hear.
As a final thought, I’m thoroughly glad that AO has come out with new releases, expanding their catalogue and improving their portfolio gathering fans from inside and outside of the country. Thus, wrapping up my review for this time and hopefully we will see more interesting releases from Alpha Omega in the future!
Test Tracks
Untuk Perempuan Yang Sedang Di Pelukan - Payung Teduh 44.1kHz
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
The Devil in I - Slipknot44.1kHz
Hunter – Björk 44.1kHz
Hollow (16-Bit Remix) – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 44.1kHz
Rythm - Jamey Haddad; Lenny White; Mark Sherman 44.1kHz
Kimigatame - SuaraDSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
In My Room - Hikaru Utada 44.1kHz
Colors (Live in Studio) - Black Pumas 192kHz
Timbres – Yosi Horikawa 44.1kHz
Aquatic Mouth Dance – Red Hot Chilli Peppers 192kHzLast edited:n0varay
New Head-Fier
Pros: > Premium aesthetics, quality build and material
> Thick angled earpads provide a comfortable wearing experience
> Easy to drive
> Neutral, reference flat tuning
> Highly detailed
> Forward, intimate warm midrangeCons: > Slightly rough in terms of finish, mainly on the head structure
> Lacking treble extensionAUNE AR5000 - Fruitful Venture Into The Unprecedented
Disclaimer
IntroductionAune is a brand that has been in the Chi-Fi market for as long as one could remember back when one first began foraying into this hobby, having own their X7s which I had use as a reference amplifier back then. Known vastly for their desktop headphone amplifiers and DACs, Aune has made some top quality bangers such as the S7 Pro, X8 Magic DAC and much more. That being said, in recent times Aune has once again stepped their foot as an active player once again with some of their new releases such as the AUNE Yuki dongle DAC/AMP, X1s GT DAC, and X8 XVIII BT Magic DAC.
However, with me in this review is the recently released and Aune’s first-ever venture into full-sized headphone segment, which is the AR5000. Priced at $299 on their store and Amazon, the AR5000 features a fully open-back structure with dual detachable cable design and at the heart of this headphone is equipped with a large 50mm dynamic driver alongside a newly developed MLD (Multi-Layer Distributed) diaphragm, tilted driver placement and plenty more features which can be found on their official website.
Unboxing Experience
Simplicity and elegance, are the words best to describe the whole unboxing experience of the AR5000. To start off, the headphone came in a fairly large and heavy box with the outer layer is a piece of cardboard that slides outward revealing the actual packaging which stores the headphone itself.
But first, let us view at the outer packaging itself that can be seen has an embossed printing of the actual headphone. While on the sides and back, can be found the lists of specifications, including all of the branding, technologies and marketing details for the headphone. Now, moving to what is inside the box is the gem itself, the AR5000 resting elegantly and snug in its heavily padded throne covered with high quality golden satin fabric. Aune definitely has thrown everything all out through the roof, in terms of presentation for the AR5000.
Additionally, there is a dual 3.5mm terminated to a single-ended 3.5mm jack cable included as well. Which can be found inside a cardboard box compartment below the headphone that also features an embossed printing of the AR5000 model.
Specifications
Purchasing Links and Where to GetAmazon link:
https://www.amazon.com/Aune-Full-Size-Headphones-Detachable-Audiophile/dp/B0CLPC7Q2S
Aune Store:
https://www.aune-store.com/en/aune-ar5000-open-ear-headphone_110208_1240/
Build and ComfortFeaturing a open-back and bulky design yet weighing at just 350 grams, the AR5000 somewhat still manages to place itself within the lightweight category thanks to its build. Aune mostly utilizes high-grade plastic components as what you would find in similarly priced headphones for majority of the parts such as the earcups, headband adjustment mechanism. Aune also has opted for metal on the headband structure, yoke and grills which protects the driver housing. Despite that being the case, the finishing on metal parts mainly are finished poorly and rough, which potentially might cut through your skin if its not handled cautiously. Each respective side of the yoke has an indicator, written “L” and ”R” for users to recognize the appropriate direction for use and plugging In the cable.
Additionally, the headband itself is made out of polyurethane (PU) leather which distributes the weight of the headphone exceptionally well. The pre-attached angled hybrid earpads are easily replaceable without any sort of proprietary locking mechanism. The earpads are made with fenestrated PU leather on the outer wall and mesh interior. It is fairly thick and has a large cavity which can fit four knuckles quite easily, the angled driver design also ensure most ears does not come in contact directly with the driver housing.
Clamping force is fairly secure and snug, although the AR5000 presence is noticeable throughout the whole usage. Its overall weight distribution and comfortable earpads provides a superbly pleasant experience. Likewise with many other headphone that shares similar design, the AR5000 does not isolate external noise. Due to its open-back design as well, this headphones leak sound fairly easy, hence its best to keep this headphone indoors to fully appreciate the sound quality that this headphone has.
Cable
Apart from the original stock, Aune was generous enough to include their recommended upgrade balanced cable for the AR5000 as a free gift, which is the Aune AR3. Regardless, straight out of the package users will get a dual 3.5mm to 3.5mm single-ended termination. AUNE does not specify what kind of material they have used for the stock cable in the specification sheet. Nonetheless, it features a two-braid cable, covered in fabric insulation, measured at 1.5 meter in length which is standard. Each end of the connectors including the Y-splitter are made out of metal with a brushed matte finish. Plus, each side of the jacks are also indicated “L” and ”R” on each side of the connector housing. Overall, it is a good quality, lightweight and beautifully made cable, although that being said it is slightly microphonic when in contact with fabric.
Next, onto the Aune AR3 cable which is sold separately that can be found on their website, selling for a reasonable price of $80. According to their website, this cable features a heavier four-braid, 6N OCC (Ohno Continuous Casting) with Litz Type 2 copper cable. Again, dual 3.5mm connectors both indicated for each side but only this time it is terminated to a 4.4mm Pentaconn plug. Other than that, the overall finish on the connectors and Y-splitter is decorated with a shinier stainless steel housing which looks gorgeous under the lights. The AR3 eliminates all of the microphonic problem that the stock cable has, since it is insulated with soft TPEE material that feels a tad tacky to the touch.
For those who might question about sonic differences or cable geeks, on multiple listening test conducted, switching back and forth between the cables. The AR3 provides better resolution, better separation and looser mid-bass impact compared to the stock cable by a small margin.
Test Equipment
Power RequirementsDespite its large drivers and beefy appearance, the AR5000 is in fact a superbly efficient pair of headphones which can be driven optimally through most devices including the Sony Xperia 1 V which has a considerably underpowered amplifier for most full-sized headphones.
Driving it through the A&K SE100 on 2.5mm balanced connection which has a decent 4.1 Vrms of output power, the AR5000 sounds loud and crystal clear at 35-40/150 on the volume wheel for my personal listening. Thus, most modern dongles should have absolutely no problem to provide enough juice to make this headphone really sing its heart out.
Initial Impression
“Wait, this sounds oddly familiar?”
That was the question I asked myself first time hearing the AR5000. Wacky as it seem, it reminds me so much to the legendary Sennheiser HD600 series which has been the gold standard, for audiophiles of all extend. Glad that I finally have tried all models in the series not too long ago, during my recent visit to the store.
Before someone would make any dubious speculation, it does not mean Aune was trying to imitate the HD600 series. Perhaps, one can say it is inspired by the veteran because despite the similarities, the AR5000 has a character of its own especially in the upper-mids and treble range which made this pair distinctively different. The overall sound signature is reference neutral and tuned as flat as it can be. Sub-bass roll-off has a slightly early roll-off yet at the same time still warm and lush, reminiscent to the HD600 series except the AR5000 does not sound neither velvety or as smooth as its counterpart. It sounded a tad more gritty, somewhat emphasized not deliberately yet still creates an over-sharpened image within the 2.5k-5kHz region.
Low Frequency (Bass)Reference tuning often prioritize neutrality and the importance of unaltered reproduction of sound as minimal as it can, especially within the low frequency region. This applies towards the overall bass for the AR5000, it has a flat, reference-like sounding bass with minimal colouration which is perfect for monitoring and mixing use. Do not be mistaken reference neutral to be sterile or cold, because the AR5000 is clearly none of those. The overall timbre and tonality is surprisingly warm, natural and lifelike.
Due to the aforementioned early sub-bass roll-off, the AR5000 does definitely struggles to deliver satisfying level of thick rumbling low-bass performance. Regardless, the gentle rumbling effect that this headphone could do has good amount of definition and texture at macro and micro levels. For example, during the first 30-seconds entering the track Hollow (16 bit Remix) – Björk, the AR5000 renders the deep rumbling sub-bass effect pristine, as the large 50mm dynamic drivers deliver macro details and texture competently.
Furthermore, shifting slightly higher into the mid and upper-bass region, the AR5000 has more than sufficient energy to present tight and controlled bass impact which resembled in a polite “thud”. Since this headphone fell short in terms of bass extension as well, this indirectly affect the overall dynamics and depth. 7 rings - Ariana Grande, is an exemplary example to test the capability on bass slam and delivery. In this song, bass transients for this headphone which is the length of reverberation from loudest to quietest was short, tactile with average layering.
Middle Frequency (Mid)Midrange is the key strength on this pair, whereby tonal balance or colouration in the mids were mainly on the warmer side. Vocals are superbly articulated, natural sounding and detailed. Similarly for string instruments and percussion, timbre was accurate with instruments are easily distinguishable and note weight were also above my expectations, harmoniously balance between organically warm and reference flat. Listening to First Love - Hikaru Utada and Kokoroe (FROM THE FIRST TAKE) - Uru was an absolute bliss and thoroughly impressed by how the vocals are separated with forward warm presentation and pristine. However, due to the upper-mid boost the AR5000 it may sound a tad too forward and not as velvety which can be solved through EQ by lowering frequencies between 2.5k-5kHz.
High Frequency (Treble)Overall, as per said in the initial impression the top-end on AR5000 does sound similar of the Sennheiser HD600, but not entirely the same either. The AR5000 has a pleasant lively treble, fairly crisp with good treble energy. Detail is astoundingly good and forgiving even with poorly recorded tracks, plus devoid from any sibilant within the 5k-8kHz region. Sound of crashes, hi-hats in such tracks like Anesthetize – Porcupine Tree and violins in Underground – Lindsey Stirling reproduced by the AR5000 has good energy and a tad edgy texture, which one does not see as any sort of negativity as it aids to highlight contour of note weight and timbre of those elements.
Furthermore, treble extension is marginally lacking resulting shorter and faster roll-off in the upper-treble range but still maintains good level of airiness, keeping the ambience natural and roomy.
TechnicalityAune AR5000 achieves balance harmony between pleasure and competent level of technical prowess. When it comes to detail retrieval, the AR5000 provides it so effortlessly without being too clinical, like squinting into a magnifying glass. Macro and microdetails are in every song are audible, although that being said the overall resolution this headphone produce was average at best. Soundstaging and spatial imaging were average at best, yet natural thanks to the fully-open back design, nevertheless the width of the soundstage generated by this pair is greater compared to it’s depth. Rhythm – Jamey Haddad; Lenny White; Mark Sherman is a regular track to test these criteria, the AR5000 was able to present high and low levels of details in this binaural recording. Entering midway into the track, the AR5000 renders the movement of cowbell, castanets and maracas being hit while moving were accurate but not at pinpoint level of resolution.
Additionally, the AR5000 possesses very good separation capability elements are all neatly presented and cohesive hindered from any melding. In Aquatic Mouth Dance – Red Hot Chili Peppers to test the separation that the AR5000 could produce, every elements in this track are audible and separated from each other from the start till the closing stages of the track which is the bussiest part, the AR5000 shows no sign of melding. Lastly, the dynamic range test for the Aune AR5000 is rated at average. Utilizing the Ultimate Headphone Test – ABYSS Headphone dynamic range test as a reference. In which explained in short, a sample sound of a drum and a bell are played simultaneously as much as 7 counts, but only the sound of the bells will become quieter. Hence, from a scale of 7 counts, the AR5000 was able to produce an audible 5 out of 7 counts.
Comparison (s)
AKG K550 MKI ($300)
ConclusionAune has ventured into unscathed segment with a strong statement with the AR5000. Although, this pair is regarded as a neutral, reference tuned headphone. It can certainly blend with most genres and apparently versatile for both reference task and for pure music enjoyment. I can imagine that the AR5000 would pair very well with OTL tubes amplifiers, while tuning into some warm, comforting all-time favourite tunes for hours without feeling any discomfort.
That being said, perhaps Aune could place a bit more emphasis on improvising and refine the overall finish of their future product. Despite this being their first ever foray into the headphone market, one could not help but thoroughly impressed with the overall quality from the presentation, material chosen for the build and tuning itself at an affordable price. Thus, that wraps up my review this time, hope it helps and see you all in my next review.
Additional Test Tracks
A Poem Titled You – Taeyeon 44.1kHz
Anesthetize (Live) – Porcupine Tree DSD256
Hunter – Björk 44.1kHz
La vaguelette (Original Game Soundtrack) - HOYO-MiX 48kHz
Kimigatame - Suara DSD11.2MHz
Furiko – Uru 44.1kHz
Automatic - Hikaru Utada 44.1kHz
Artemis - Lindsey Stirling 44.1kHz
Timbres – Yosi Horikawa 44.1kHz
Poster Child – Red Hot Chilli Peppers 192kHzAttachments
Last edited:n0varay
New Head-Fier
Pros: > Superb build quality
> Ergonomic, comfy shaped shell
> Fully accessories
> Fun, warm timbre and tone
> Decent overall clarity
> Superb musicality
> Amazing bass amount and response with a deep bass
> Good sub-bass extension
> Good transparency
> Energetic, airy high range
> Intense, fun treble
> Good overall technicalities
> Good soundstage width and heightCons: < Recessed midrange
< Slight BA timbre
< Average resolution
< Needs a good and powerful source matching
< Not a clinical performer
< Not for monitoring
< Cables a little cheap looking
< Competitive market and price segment
< Might be too bassy or too piercing with certain sources
BASN Metalen - Caffeine For Ears
Disclaimer
BASN which stands for ‘Be A Sincere Newcomer’ is actually not a newcomer in this audio industry but they were established way back in 2009 by an audiophile enthusiast, Louis Lee and they are based in California, USA. They are rarely mentioned here in the audiophile scene in Asia but BASN is quite well known in the west for producing in ear monitors for musicians and producers alike. They have a wide catalogue of products that includes a portable vinyl player and a microphone as well. Perry from BASN has contacted us to introduce our community with their brand and we are thrilled to have this opportunity as we at Audiomonsta are keen to find hidden gems all around the globe for us all to enjoy. BASN has kindly sent us a pair of their 4 drivers IEM, the Metalen for a review and we are truly grateful for the opportunity given. How will they fare in this ever growing portable audio scene? We shall find out here.
Functions & SpecificationsBefore we start the review, here are the specifications of the BASN Metalen;
The BASN Metalen can be purchased from their store and Amazon;
https://www.amazon.com/dp/B0BXPF7VLM/ref=twister_B0BXPJ57JP?_encoding=UTF8&th=1
https://www.basnaudio.com/
Packaging & AccessoriesThe packaging here is a simple, straightforward type of retail packaging that looks professional steering away from those over the top anime themes. They are packed like a well established company package with their information on the back inside a medium small box. Inside we will find a plethora of accessories that is worthy of it's asking price which includes 3 pairs of foam tips, 3 pairs of silicone tips, a cleaning tool, a 6.35mm converter, 2 basic cable which consists of 1 with microphone and 1 braided single ended cable, a zipper hard case and the IEM itself. The Metalen is fully accessorised indeed and very neatly packed.
DesignThe design is an ergonomic shaped shell that is quite small in size and they fit into the ear concha snugly giving a superb comfort that is suitable to wear for a long listening session. The Metalen is a CNC machined titanium alloy build that is what I would call solid, seamless and feels premium on hands with a slight weight on it. The overall build is impressive to say the least with their brand logo imprinted on the faceplate. BASN also claims that the titanium alloy that they used is also great in controlling the resonance problem to create a clearer overall sound.
The Metalen is equipped with 4 drivers which consist of 2 dynamic drivers along with a dual balanced armature. The dynamic drivers are dual 10 mm drivers that are in charge of the lower frequencies towards the midrange along with 2 balanced armature fixed near the nozzle where 1 driver is in charge of the mid to highs region and another for the high region.
The nozzle is rather large in diameter and they are fitted with a metal mesh for protection. There are 2 vents near the nozzle and another vent at the inside of the body providing a well vented IEM that possesses zero driver flex.
There are a total of 6 pairs of eartips that consist of 3 pairs of black foam tips and 3 pairs of silicone eartips in normal size bore all in small, medium and large sizes.
They come with a silver metallic zippered hard case that is made with some type of fabric that mimics a steel case. They do offer a great protection for the IEM and are practical for everyday usage.
The Metalen has a protruding type of MMCX plugs that is quite different to minimise the swivelling effect of normal MMCX plugs but other 3rd party MMCX can be used without any problems.
There are 2 types of silver plated cable included in the package where 1 straight cable with a 3 button microphone that has a rubbery body and they are quite sticky to the touch and another single ended cable in 3.5mm 4 core braided cable. Both of these cables are fitted with ear guides with memory metal inside to form a better fit on your ears. The cables honestly looked a little on the cheaper side and I would prefer a single good quality cable instead of 2 cheaper ones.
Gears Used for Comparisons
