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RE: OPA2134 vs OPA2604 vs OPA2107

Posted by KanedaK (A) on December 23, 2016 at 02:46:03

In Reply to: RE: OPA2134 vs OPA2604 vs OPA2107 posted by madisonears on December 22, 2016 at 18:48:20:

LM4562 in my revox player took more than 100 hours to sound good.
Before that, it was as sharp and cold as a swiss knife.

OPA2134 seems inoffensive and defined enough but it's got this flat, slightly recessed in the midrange presentation - not quite what I'd call "dull" but not bright, just a bit "hifi", it sounds like an entry-level Japanese solid-state amplifier, and there's not much openess and width to speak of. I've heard my system imaging from wall to wall so this sounds a bit uninspiring. everything stays between the speakers.

Say I'd mix LM4562 and OPA2134. I guess I have to try it myself but, what do you think would work best? LM4562 as input buffer and OPA2134 at the outputs? or the opposite? Or, maybe, OPA2134 on the lowpass outputs and LM4562 on the highpass?
I have this thought that the signal coming out of the lowpass should go trough the same active devices as the signal coming from the highpass to keep coherency at its max, but somehow I feel that's just overthinking and it's not going the feed the same amplifiers anyways so... maybe something to try.

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