Tempotec V3 DAP - small, powerful, functional with Hiby OS
- Thread starter Alexsan
- Start date
fish1050
Headphoneus Supremus
I am glad you like your Tempotec DAP's, I am not debating that people have bought them and like them.V3 & V6!!!
There are issues for me that have me questioning whether it is the best DAP for me compared others available or releasing soon and I will be debating for the next few months. I am glad to see that it seems to handle special characters, the biggest issue I have with buying Shanling MTouch DAP's. This is definitely a plus in favor of buying a Hiby OS (Linux) based DAP at some point.
Tecnologoto
New Head-Fier
You fell in in love with the DAPs a while now
. Just buy the one you like. At this point, there are no complains with the V3. The last update fix the software problems and change the sound.Get the Hiby RS2, the N3 Ultra, the new Shanling M5 Ultra or a Fiio M11 Plus LTD if you really want a warm profile.
I got the V6 because I wondered how it compares against the V3. Both are excellent DAPs in their range of prices.
The next R4 will be an Android device, isn't it? Is not something I'd look for. I don't use streaming services and I'd rather buy a desktop DAC or try a good dongle DAC like the Cayin RU7.
fish1050
Headphoneus Supremus
Yes that is the crux of my research ultimately picking one of the many DAP's I have looked at. Not looking to buy until Black Friday so for now I am in research mode. Glad to hear that the V3 is stable now with firmware updates. Yeah I have been researching most of the DAP's you mention. Several are only an option if their is a big price drop on Black Friday. The Shanling M5 Ultra would be a consideration as it is one of the few DAP's I will be able to buy in Canada. But the price is very steep at $799 CDN pre-order and I am not a fan of the MTouch OS plus it has way more power than I need and would gladly trade some of the power for better battery life.You fell in in love with the DAPs a while now
Get the Hiby RS2, the N3 Ultra, the new Shanling M5 Ultra or a Fiio M11 Plus LTD if you really want a warm profile.
I got the V6 because I wondered how it compares against the V3. Both are excellent DAPs in their range of prices.
The next R4 will be an Android device, isn't it? Is not something I'd look for. I don't use streaming services and I'd rather buy a desktop DAC or try a good dongle DAC like the Cayin RU7.
You are correct the R4 is Android 12 but Hiby takes out most of the bloat and leaves in only the audio stuff. So it would require a lot less Android liposuction than say the A306 would to slim it down to the bare bones needed. At my age I can really appeciate the much larger screen on the R4 vs the V3. Apparently Hiby is including some new audio enhancement plugins for the R4 and their other Android DAP's. Not interested in streaming either so wifi would be off most of the time as would bluetooth.
There was a big price drop on the V3 in March on Aliexpress during their anniversary sale. A similar price drop around Black Friday could make it a steal. I was really hoping the V3 would eventually be sold on amazon but it doesn't look like it will. Right now it is the Discrete Class A amp on the R4 and it's price holding my attention and hopefully there will be some reviews comparing the R4 to the V3 given how close they will be priced once it officially drops. My mind is completely open to any possible DAP's given it offers what I need at a price I can afford to pay.
Once I retire my wife and I have decided to ditch our smartphones and go with talk and text only phones. So my next DAP will be my only portable source for music so dongle's aren't a consideration.
Appreciate your thoughtful post and your suggestions.
I noticed that decoupling capacitors on VREF for AK4493SEQ are 47uF but decoupling capacitors on LPF (OPA1652) are 220uF. It looks odd to me when datasheet is recommended to use larger capacity on VREF (depended on voltage source level noise).
Even more, we have well known picture from AK4490 datasheet.
I tested by one the installed 47uF and 220uF for ESR value, and got they are not low ESR (approx 0.4..0.7 Ohm) so it with that and how they marked the can be Vishay TMCM series or clone one.
So I did a simple mod. I replaced all installed tantalum capacitors to tantalum-polymer capacitors with maximum available capacity and low ESR value (Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm), and also replaced negative voltage linear regulators with another one.
I made a short list for capacitor choice possibilities, it limited to tantalum-polymer and capacitor size: case B 3528. Tantalum polymer cap is more tolerant to rated voltage so for 5V I can use 6.3V rated cap.
Just noticed FiiO M11Plus uses the Kemet low ESR tantalum polymer caps 220uF 6.3V (last photo) https://www.reddit.com/r/FiiO/comments/nppdsy/fiio_m11_plus_ltd_teardown/
And what about linear regulator, so the stock negative voltage linear regulators are XC6901D501PR-G and I decided to replace that with LT1964ES5-5 (lower noise and lower voltage dropout). It's not pin compatible and needs to use bypass cap for low noise.
There is also possibility to use ADP7182AUJZ-5.0-R7 without any modification and full pin compatibility. And also there are few alternatives for linear regulators with adjustment option but it requires additional components like precision resistors.
So here are my photos of the mod
I think the stock positive voltage linear regulator MCP1802T-5002I/OT can be replaced with TPS7A2050PDBVR ("300-mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator with high PSRR"). Probably I'll try this one.
Even more, we have well known picture from AK4490 datasheet.
So I did a simple mod. I replaced all installed tantalum capacitors to tantalum-polymer capacitors with maximum available capacity and low ESR value (Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm), and also replaced negative voltage linear regulators with another one.
I made a short list for capacitor choice possibilities, it limited to tantalum-polymer and capacitor size: case B 3528. Tantalum polymer cap is more tolerant to rated voltage so for 5V I can use 6.3V rated cap.
Code:
Panasonic 6TPE220MAPB 220uF 6.3V ESR=0.025 Ohm
Panasonic 6TPE220MAZB 220uF 6.3V ESR=0.035 Ohm
Panasonic 8TPE100MAZB 100uF 8V ESR=0.035 Ohm
Kyocera AVX TCOB0J227M8R-EN1 220uF 6.3V ESR=0.035 Ohm
Kyocera AVX TCJB227M006R0070 220uF 6.3V ESR=0.070 Ohm
Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm
Kemet T520B227M006ATE035 220uF 6.3V ESR=0.035 Ohm
KEMET T520B227M006ATE025 220uF 6.3V ESR=0.025 Ohm
KEMET T520B107M006ATE015 100uF 6.3V ESR=0.015 Ohm
Kemet T520B107M010ATE070 100uF 10V ESR=0.070 Ohm
Vishay vPolyTan T55 series
T55B227M6R3C0025 220uF 6.3V ESR=0.025 Ohm
T55B107M6R3C0035 100uF 6.3V ESR=0.035 OhmAnd what about linear regulator, so the stock negative voltage linear regulators are XC6901D501PR-G and I decided to replace that with LT1964ES5-5 (lower noise and lower voltage dropout). It's not pin compatible and needs to use bypass cap for low noise.
There is also possibility to use ADP7182AUJZ-5.0-R7 without any modification and full pin compatibility. And also there are few alternatives for linear regulators with adjustment option but it requires additional components like precision resistors.
So here are my photos of the mod
I think the stock positive voltage linear regulator MCP1802T-5002I/OT can be replaced with TPS7A2050PDBVR ("300-mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator with high PSRR"). Probably I'll try this one.
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Tecnologoto
New Head-Fier
And how it sounds?I noticed that decoupling capacitors on VREF for AK4493SEQ are 47uF but decoupling capacitors on LPF (OPA1652) are 220uF. It looks odd to me when datasheet is recommended to use larger capacity on VREF (depended on voltage source level noise).
Even more, we have well known picture from AK4490 datasheet.
I tested by one the installed 47uF and 220uF for ESR value, and got they are not low ESR (approx 0.4..0.7 Ohm) so it with that and how they marked the can be Vishay TMCM series or clone one.
So I did a simple mod. I replaced all installed tantalum capacitors to tantalum-polymer capacitors with maximum available capacity and low ESR value (Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm), and also replaced negative voltage linear regulators with another one.
I made a short list for capacitor choice possibilities, it limited to tantalum-polymer and capacitor size: case B 3528. Tantalum polymer cap is more tolerant to rated voltage so for 5V I can use 6.3V rated cap.
Just noticed FiiO M11Plus uses the Kemet low ESR tantalum polymer caps 220uF 6.3V (last photo) https://www.reddit.com/r/FiiO/comments/nppdsy/fiio_m11_plus_ltd_teardown/Code:Panasonic 6TPE220MAPB 220uF 6.3V ESR=0.025 Ohm Panasonic 6TPE220MAZB 220uF 6.3V ESR=0.035 Ohm Panasonic 8TPE100MAZB 100uF 8V ESR=0.035 Ohm Kyocera AVX TCOB0J227M8R-EN1 220uF 6.3V ESR=0.035 Ohm Kyocera AVX TCJB227M006R0070 220uF 6.3V ESR=0.070 Ohm Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm Kemet T520B227M006ATE035 220uF 6.3V ESR=0.035 Ohm KEMET T520B227M006ATE025 220uF 6.3V ESR=0.025 Ohm KEMET T520B107M006ATE015 100uF 6.3V ESR=0.015 Ohm Kemet T520B107M010ATE070 100uF 10V ESR=0.070 Ohm Vishay vPolyTan T55 series T55B227M6R3C0025 220uF 6.3V ESR=0.025 Ohm T55B107M6R3C0035 100uF 6.3V ESR=0.035 Ohm
And what about linear regulator, so the stock negative voltage linear regulators are XC6901D501PR-G and I decided to replace that with LT1964ES5-5 (lower noise and lower voltage dropout). It's not pin compatible and needs to use bypass cap for low noise.
There is also possibility to use ADP7182AUJZ-5.0-R7 without any modification and full pin compatibility. And also there are few alternatives for linear regulators with adjustment option but it requires additional components like precision resistors.
So here are my photos of the mod
I think the stock positive voltage linear regulator MCP1802T-5002I/OT can be replaced with TPS7A2050PDBVR ("300-mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator with high PSRR"). Probably I'll try this one.
I noticed deeper bass, wider soundstage, more details on live records.
Please explain in simple words for us mere mortals.I noticed that decoupling capacitors on VREF for AK4493SEQ are 47uF but decoupling capacitors on LPF (OPA1652) are 220uF. It looks odd to me when datasheet is recommended to use larger capacity on VREF (depended on voltage source level noise).
Even more, we have well known picture from AK4490 datasheet.
I tested by one the installed 47uF and 220uF for ESR value, and got they are not low ESR (approx 0.4..0.7 Ohm) so it with that and how they marked the can be Vishay TMCM series or clone one.
So I did a simple mod. I replaced all installed tantalum capacitors to tantalum-polymer capacitors with maximum available capacity and low ESR value (Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm), and also replaced negative voltage linear regulators with another one.
I made a short list for capacitor choice possibilities, it limited to tantalum-polymer and capacitor size: case B 3528. Tantalum polymer cap is more tolerant to rated voltage so for 5V I can use 6.3V rated cap.
Just noticed FiiO M11Plus uses the Kemet low ESR tantalum polymer caps 220uF 6.3V (last photo) https://www.reddit.com/r/FiiO/comments/nppdsy/fiio_m11_plus_ltd_teardown/Code:Panasonic 6TPE220MAPB 220uF 6.3V ESR=0.025 Ohm Panasonic 6TPE220MAZB 220uF 6.3V ESR=0.035 Ohm Panasonic 8TPE100MAZB 100uF 8V ESR=0.035 Ohm Kyocera AVX TCOB0J227M8R-EN1 220uF 6.3V ESR=0.035 Ohm Kyocera AVX TCJB227M006R0070 220uF 6.3V ESR=0.070 Ohm Kemet T520B337M006ATE040 330uF 6.3V ESR=0.040 Ohm Kemet T520B227M006ATE035 220uF 6.3V ESR=0.035 Ohm KEMET T520B227M006ATE025 220uF 6.3V ESR=0.025 Ohm KEMET T520B107M006ATE015 100uF 6.3V ESR=0.015 Ohm Kemet T520B107M010ATE070 100uF 10V ESR=0.070 Ohm Vishay vPolyTan T55 series T55B227M6R3C0025 220uF 6.3V ESR=0.025 Ohm T55B107M6R3C0035 100uF 6.3V ESR=0.035 Ohm
And what about linear regulator, so the stock negative voltage linear regulators are XC6901D501PR-G and I decided to replace that with LT1964ES5-5 (lower noise and lower voltage dropout). It's not pin compatible and needs to use bypass cap for low noise.
There is also possibility to use ADP7182AUJZ-5.0-R7 without any modification and full pin compatibility. And also there are few alternatives for linear regulators with adjustment option but it requires additional components like precision resistors.
So here are my photos of the mod
I think the stock positive voltage linear regulator MCP1802T-5002I/OT can be replaced with TPS7A2050PDBVR ("300-mA ultra-low-noise low-IQ low-dropout (LDO) linear regulator with high PSRR"). Probably I'll try this one.
Tecnologoto
New Head-Fier
I don't have the skills to do any of that
I prefer brands do it for me. Also, I knew V3 was a copy of the V6 in papers, but they are not the same! V6 sounds more refined than the V3, so, I guess there are little components that makes it cheaper than its big brother...I saw the messages in chats form experienced users who disassembled March III, V3 and V6, and they wrote the devices internally are similar. But they do not share internal photographs and do not answer to request those photos. I don't have V6 or March III and didn't find any disassembly/teardown high resolution photo.
Blue capacitor block marked '47 10a' (47uF 10V) is for VREF decoupling. Red capacitor block marked 'JJ8L' (220uF 6.3V) is for LPF (OPA1652) decoupling.
Tecnologoto
New Head-Fier
The first page of this post, Alexsan said that the pair of OPAs that V3 has, could be better than the V6 has.
At least, for my ears, V6 sounds a little more refined, it has a little better soundstage and a little better timbre. V3 is more musical and I love its profile, also it has better layering. V3 could be more enjoyable than V6, but V6 is still better... If Tempotec works hard in the next update, hope V3 be even better. That happened in January. V3 was flat, kind of "pure" with 0.X version.
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The clicks & dropouts happens only when using as DAC, I've to guess it happen to me only?
A silly question, how does one delete a customize MSEB since there's no delete option?
Can't find any longpress option or submenu for it.
A silly question, how does one delete a customize MSEB since there's no delete option?
Can't find any longpress option or submenu for it.
Did you try to enable/disable "USB DAC feedback" in System menu? https://www.head-fi.org/threads/the...oved-sound-and-bluetooth.872288/post-17985829
I did & it's fixed it i think as I'm experiencing disconnection issue with the Samsung FE via Type c to Type c as well...
Thanks @losber !
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