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In Reply to: RE: Not a fair comparison posted by Ozzie on February 02, 2025 at 15:05:20
I don't know what's wrong with Pass Labs class A amps. On my Plinius amp, there is a switch which can change between class A and class AB on the fly. Both classes can output 125W. In my system, class A sounds very noticeably better than class AB. No question about.
Follow Ups:
Define better. We all have personal tastes. I hope not to hear musical. That's a non answer. High fidelity isn't musical ; it's supposed to be accurate. The question in an audio world with imperfect devices is what compromises to make to come close to accurate. Is it frequency? Is it dynamics? Is it distortion? It's all the above and balancing them to some degree varies with each individual. I recall David Berning showing me an amp with variable feedback that sounded better the higher the distortion because the dynamics improved. Oh and the amp was almost pure class B.Your particular example of class A may be right for you. I'm not sure it is universal.
Edits: 02/02/25
He is right, it is much better in Class A. A friend of mine has this amp we have tested this extensively. The Class AB, is a little hard, a little bright and soundstage and imaging flatten out considerably. Tonality in Class A is closer to right than I have heard from nearly any other SS amp. It doesn't sound slow or "fat" in Class A, just more tonally right. Soundstage gets dimensions that don't exist in AB.
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