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Help !!! Opam for my cmoy ... - Page 2

post #16 of 18
Looks like a dark but not laidback and dull sounding op-amp is needed. Honestly, I hate the OPA2227 and don't even understand using it in audio. OPA2134/2132 are better but still lacking clarity, details and soundstage.
I would suggest TLE2142, it's available in DIP8 package, tolerates 4 - 44V single or dual supply so 1 9V battery is no problem.
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post #17 of 18
Quote:
Originally Posted by tomb View Post
Yep. I love the OPA2107 in the SOHA - plenty of volts there.

I think because the AD823 has only 15ma output current. It's very possible that it will clip a lot in a non-buffered circuit like the CMoy - might be why some don't like it.
I use AD823 in Cmoy without any clipping. Now i use AD823 in the left/right channel, and put AD847 after it as unity-gain buffer. Any comment on the configuration?
post #18 of 18
Quote:
Originally Posted by wui223 View Post
I use AD823 in Cmoy without any clipping. Now i use AD823 in the left/right channel, and put AD847 after it as unity-gain buffer. Any comment on the configuration?
There are too many combinations to say the AD823 will cause a problem in every case. However, the probability is on the bad side with output current that low. If you listen at a low volume with very efficient or higher impedance cans, then the AD823 may perform well - that's probably not the case with Grados, for instance.

You must've had some reason for adding a buffer, though.
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