Disclaimer
I got this unit as part of Australia/New Zealand tour arranged by
@RHA Team, thank you very much for including me in this tour
Introduction
I am just another music fans in this world, I love listening to music, and that made me stumble into head-fi around 10 years ago when looking for the best way to listen to my music. I am not in anyway an audiophile, heck not even close, so please forgive any lack of details in my review. Most importantly this is my personal impression on the unit, most likely i heard things differently than you, my ears, my preferences, my brain
I've listened to RHA CL750 for about 4 days. I've used them with LG V10, Walnut V2 DAP, and through RHA DACAMP L1 . The source will be either my personal music or google play music.
Music preferences
My music preferences is mostly instrumental, whether it's Classical, Jazz, Celtic, New Age, etc. I also enjoy music with vocal on them, but my playlist is mostly instrumental. I would say around 80/20 mix.
Example of the music I listen (not limited to):
- Acoustic Alchemy
- Tony McManus, Soig Siberil
- Hawaiian Slack Key guitars
- Fusion Jazz (Lee Ritenour, Dave Grusin, Fourplay, Special EFX, you get the idea)
- Akira Jimbo, Tetsuo Sakurai, Casiopea
- Incognito
- Europa Galante/Fabio Biondi, Musica Antiqua Koln, Rolf Lislevand
- Yoko Kanno
- Madonna
Sound signature preference
Hmm...not sure what my pref is, I enjoy Fostex TH-600 very much, It's one of the best headphone I've heard, so that make me a fan of U or V shaped sound signature.
Having said that I also enjoy ZMF Blackwood which have mid-centric sound sig compare to the TH-600, so i guess i am flexible
My typical listening gear is: Asus Xonar STU -> Project Polaris -> ZMF Blackwood
When travelling I usually use MEE P1 straight out of DAP/Phone.
Build Quality and Design
This is the first time I use RHA product, and I am quite impressed with the build quality of the CL750, the silver casing is pretty solid and smooth, and not heavy at all. I also like how they cover the cable with a transparent plastic tube/rubber?, no microphonic sound at all, although when it's tangled they kind of make them hard to untangle. The ear guide is ok, although i would prefer a more stiff ones.
Sound Quality
Ok the most important part for me, sound quality, so how do they sound? They have a classic V shaped sound signature, treble and sub bass is emphasized, mids is recessed but still enjoyable. Music sounds clear and crisp, but can sound a bit thin or hollow.
When I tried them the first time I have a bit of trouble with the fitting, apparently I push the tip too much and that stop them from getting a good fit on my ears, and without a good fit, they will sound very hollow with harsh treble and lacking bass, so if you tried them out and find them sounding bad, maybe it's not fitting your ears properly.
I listen to a lot of acoustic guitar music and I found CL750 sound sig quite enjoyable, string sound on higher frequency sound crispy and clear thanks to the elevated treble, however i did miss a bit more mid bass that will bring body to the string sound. From my experience, instrumental music sounds great with CL750, even though the mids are recessed you can still enjoy them.
Hearing female vocal is a bit different, it's very dependent on the mastering (and maybe quality of the source as well), for example, I tried listening to Vanessa William - Colours of the Wind and the sibilance is very obvious. Madonna - Cherish is almost similar experience. From what I can hear both recording is a bit bright, and the CL750 sound sig just elevated them even more. However, not all vocals are sibilance, for example Orange Pekoe - oriental jazz mode sounded just fine to me
I do found solo piano to sound great with them, most of the solo piano recording i listened to tend to sound bit dark, so CL750 fits them well, in my opinion anyway.
Having said that, if you don't mind using EQ, i find that lowering the treble really make them shine, with the treble reduced, you can hear the mids clearly and they actually sound very nice.
Comparison
RHA CL750 vs MEE P1
Coming from MEE P1, I can't help to notice the absence of the mids on the CL750, it's there but definitely outshine by the treble, it's bit shocking in the beginning. However as i used the CL750 overtime I didn't really notice the recessed mid as bad as before. The treble on the P1 is never sibilance, and in my opinion is perfectly balance with the mids.
So MEE P1 have more balanced sound signature compare to CL750, with some slight mid-bass hump on them than given them a warm sound sig. I notice that CL750 have a bit more sub-bass (probably around 60hz region) while the bass on MEE P1 is more pronounced on the upper region (maybe around 110hz and above).
If i have to pick it would have to be MEE P1 for it's more natural balanced sound, but with a bit of EQ CL750 is pretty close behind them.
RHA CL750 vs CL1
WHen i listen to CL1, i have and immediate feels that the CL1 is like the big brother of the CL750, very similar sound signature but more, specifically more bass and treble. More bass - great!, more treble - ah, not so great for me. CL750 alread a bright IEM by default, and CL1 somehow add even more trebles make them sounding hyper-clean and bright, while this might be favourable for some music, when you hit those bright recording it's really painful to hear them.
Again, with EQ they can be a better IEM, I prefer the bass of the CL1, but prefer the treble on the CL750, so a bit undecided here. However comfort and build wise CL1 is way better than CL750.
Summary
If you read through my review, you might get the impression that I don't really like them, but the truth is I quite enjoyed them, I listened to them nonstop for hours on the Walnut V2 (great pairing here) and only if I compare them to the MEE P1 then I realized the recessed Mids.
If you like V shape sound signature, bright and clear sounding IEM, give RHA CL750 a try, they might be the right IEM for you.