Class A amps


I've read a few articles on class A amps but still don't have a good understanding of how it affects sound quality. I've even seen amps which can be swithced into class A mode or AB. Does anyone have experience with this type of unit? Does class A have a true audible advantage or can it be detected only by test instruments? If it is audible, in what resepects? Thanks, Rick M.
mili224
This statement is false.
This statement is rubbish
No it’s the opposite


Take it up with Nelson Pass. The Messiah of solid state class-A amplification (not you)
And why his top of the line amps are low power Class-A!! and always have been.

As he says, "crossover distortion it’s "alleviated" in A/B with some bias but NOT ELIMINATED!!, that only happens in Class-A amps"

Nelson Pass on Class-A and crossover distortion:
In class AB, this effect is "alleviated" by a small bias current, and then is eliminated in class A where the bias current is high.
As he says crossover distortion it’s alleviated in A/B with some bias but not eliminated, that only happens in Class-A amps

So no examples then. The simple fact is you can't find any, or I'm sure you would have presented them. Res ipsa loquitur

Your the one that started personal mud slinging.

Yet again "product protection mode", as with preamps and the imaginary Class-D that’s yet to materialize.
If I did some mudslinging please provide an example. You might review your last sentence and consider what is really happening.


Now regarding that crossover distortion thing, most solid state amps of traditional design are class AB. By 'most of them', more than 98% (assuming that we are leaving class D out of this...). That's a lot of amps going 'way back to the 1960s...


Out of all those, you mean to tell me or anyone else that they have crossover distortion that class A amps do not, yet to back up your assertion, you can't find even **one** example?? Stereophile alone by your words would have to be full of them!


Occam's Razor suggests a simpler explanation, that in fact crossover distortion isn't a thing- unless the AB amp is under-biased/malfunctioning.


You might consider picking up a class AB amp and putting it on the bench and testing it, and setting up its bias and DC Offset. Its patently obvious that's a thing you've not done.







It’s like flogging a dead horse.
Whatever Ralph, you only post when there’s a potential sale, or are in product protection mode, we can all see this it’s that obvious.