Accustic Arts Power 1 - operates in Class A?

What I've done is reduce it slightly to around 290ma from 300. The thread I'm referring to concludes it's not quiescent current that matters but instead the voltage drop across the emitters is the important number. So optimal bias with bipolars may be a reduction in current after all. But the mosfet amps I have don't have emitters and must be biased at the rails.

Kijanki, I just recently read a thread on this very subject on DIY. This discussion revolved mainly around BJT outputs and there was an unanswered question regarding mosfets. However, in applying this school of thought, I'm perceiving a sonic difference when backing off the stock 300ma bias setting in my Acoustat TNT200 mosfet amps. Can you please elaborate on this? Thank you.

I guess my question is whether the same principals apply or am I hearing things?

Thank you, Elizabeth. But my question is not whether it's class A. I already know it's A/B. I was questioning whether(optimal bias) as regards BJT outputs applies to mosfets.