Class A amplifiers - which are considered the best

@Peterayer - thanks a lot for your comment. I was expecting much longer period of burn-in time ... I will see ...

@Audiofeil - I agree with your posts here in this topic. There is no simple formula how to pick up appropriate HiFi system or amp (in clas A or not).

Maybe it is worth mentioning that in Europe there is new regulation in preparation, which should limit the usage of units which work in class A. It seems that either class A in its design should be modernized (like Krell is doing it) or it will be simply forbidden, because of its waste of energy. The regulation is not yet agreed and not accepted in EU Parlament but the threath is there for classic class A designs ...

Mark Levinson ML-2 bridged, is a 100W class A amplifier into an 8 Ohms. I have used these amp to drive my Infinity IRS V's for 36years. The sound is magnificent.

Mark Levinson ML-2 bridged, is a 100W class A amplifier into an 8 Ohms. I have used these amp to drive my Infinity IRS V's for 36years. The sound is magnificent.

A Sumo Nine amplifier rebuilt by Mike Bettinger of GASAudio.net gets my vote. A very nice sounding Class A amplifier that won't break the bank.

If you can find one in good condition...then I would say the original Krell KSA50.
Hard to think of another Pure Class A amp that is significantly better than Dan's original design, just IMHO.