Sylafari
Active Member
- Joined
- Jan 20, 2018
- Messages
- 108
- Likes
- 65
So a few years ago, I was looking for a headphone amplifier for my HD 800, and I stumbled across this amplifier the Questyle CMA 800R (http://www.questyleaudio.com/index.php/product/CMA800R). It seemed to tick off all the requirements for me at the time (based on the manufacturer specifications it seems to measure very well, looks to have good components in it, and subjective impressions from 'professional' reviewers seemed to be positive as well). It also had a strong marketing buzzword to me in that it has something called Current Mode Amplification (I don't wanna pretend I know what it is so I'll leave a link: http://www.questyleaudio.com/index.php/technology#电流膜技术 ).
Anyways I was curious to if there were actually any quality parts inside so I took it apart (very easy to uses some torx bits and the top cover comes off). The build is very nice as it uses very thick aluminum panels and the inside seems to look good. I'm not too sure but I have posted some pictures.
Supposedly it has a measured THD+N of 0.00038% and 114 dB SNR.
I was wondering since you guys seem to analyze PCBs on amplifiers and numerous other things to see if things are actually designed well on your insights into this amplifier (design and part quality) and if it is crap feel free to let me know (better than to know if I been duped than to keep getting duped!). My only subjective impression is that the HD 800 produces sound when used with it and doesn't sound awful.
Maybe one day I can send it in for measurements too!
A few pictures:
Hmm pictures came out too big. Not sure what to do about that...
Anyways I was curious to if there were actually any quality parts inside so I took it apart (very easy to uses some torx bits and the top cover comes off). The build is very nice as it uses very thick aluminum panels and the inside seems to look good. I'm not too sure but I have posted some pictures.
Supposedly it has a measured THD+N of 0.00038% and 114 dB SNR.
I was wondering since you guys seem to analyze PCBs on amplifiers and numerous other things to see if things are actually designed well on your insights into this amplifier (design and part quality) and if it is crap feel free to let me know (better than to know if I been duped than to keep getting duped!). My only subjective impression is that the HD 800 produces sound when used with it and doesn't sound awful.
Maybe one day I can send it in for measurements too!
A few pictures:
Hmm pictures came out too big. Not sure what to do about that...