Patrick Turner wrote:

Eeyore wrote:
Multi-grid wrote:
maxhifi wrote:

Stating that "the amplifier is Class A until XXX watts", really, is
telling you how hot the tubes are biased relative to the two extremes of
pure class A (full dissapation), and pure class (cut off).- Hide quoted text -


Class A has nothing to do with dissipation either. Just because some
marketing group noticed that class A means something good, does not
make it right either. Just because it seems to make sense is no reason
to *******ize the definition. Find some other way to describe it.

The definition of Class A is very simple. It requires that the output device(s)
never cease conducting under any signal condition.

It means slightly more than this because tubes don't cut off as sharply
as other devices.

I see what you're saying but I do believe that the definition is unchanged. Obviously
avoiding any region of significant non-linearity is preferable but that in its own right
doesn't change the definition.

Graham