Re: Class/type of amp ?

As we are all fully aware, language and linguistic interpretation changes
and develops all the time. It is a fact of life that we all accept,
otherwise we would all still be saying "thee" and so on, and "gay" would
still mean carefree and happy. The same is true of electronics. Meanings
change. The world moves on. "Class G" seems to have been accepted pretty
generally by manufacturers as the designation for the type of output stage
topology under discussion, just as "Class D" is now accepted as a fully
digital amplifier, where bias points don't come into it at all, unless you
consider 'hugely on' and 'hugely off' to be valid examples of the term.

Arfa, please see my other post. Most class D amplifiers are analog, not
digital..


Yes, you could say that this is "A class-AB amplifier with switched
rails",
but how much easier to just say that it's "Class G" ... ??

For that to work, you'd have to have some organization -- such as the IEEE
in the US -- setting standards as to exactly what class-G topology is.

I used to own Krell amplifiers. They were billed as class A, but they were
class A "only" up to about 1/4 or 1/3 full output. Given the crest factor of
acoustically recorded music, this means the amplifier will rarely stray from
class A. But strictly speaking, the amplifier is AB, with (very) high bias.

Most amplifiers are biased only a little beyond class AB. My Parasound A21
amps are unusual, in that they're still in class A up to about one ampere,
which is high for not-horribly expensive amplifier. They are correctly
billed as high-bias class AB.


.