I have a Forte 4a which was advertised as a "class A" amp. The amp is biased higher than usual. It is still NOT a true, pure "class A" (100% class A operation)
It uses the most electricity idling! More than when playing, and thus is HOTTER just sitting doing nothing if it is on.
And yeah, class AB IS part class A operation and part class B operation. And nearly all amps that are called class AB are just class A up to a point. Most biased pretty low. The exceptions that are biased fairly high are usually called "class A" operation.
Very few amps are 100% pure class A. (overkill I think)
It uses the most electricity idling! More than when playing, and thus is HOTTER just sitting doing nothing if it is on.
And yeah, class AB IS part class A operation and part class B operation. And nearly all amps that are called class AB are just class A up to a point. Most biased pretty low. The exceptions that are biased fairly high are usually called "class A" operation.
Very few amps are 100% pure class A. (overkill I think)