I'm thinking about class-A'ing some AD825s in a portable (battery-pwr) headphone amp and, perhaps, a non-portable D/A processor IV section. If you've class-A'd this op-amp was it worth the fuss (or does it do almost as well -- or better -- on its own)?
Also, how about bypassing/snubbing this guy, in a manner similar to the one suggested for another model, the OPA2132 -- or does it do almost as well -- or better -- on its own?
You may ask: why all the fuss over this el cheapo opamp? Well, I've rolled thru most of the "best" -- OPA627/37, AD843/45, AD8610/AD8620, OPA2132/4, OPA132/4, LM6171/2, etc. -- but the AD825, as imperfect as it is, is the one I keep coming back to, especially for portable use.
Also, how about bypassing/snubbing this guy, in a manner similar to the one suggested for another model, the OPA2132 -- or does it do almost as well -- or better -- on its own?
You may ask: why all the fuss over this el cheapo opamp? Well, I've rolled thru most of the "best" -- OPA627/37, AD843/45, AD8610/AD8620, OPA2132/4, OPA132/4, LM6171/2, etc. -- but the AD825, as imperfect as it is, is the one I keep coming back to, especially for portable use.
