Home Amp/Preamp Asylum

Looking for a new Amp or Preamp? If you're after tubes, post over here.

RE: Class ab and class a

Unless it has sliding bias the output devices in a Class A/B are never "biased in the middle of the most linear part of the dynamic operating curve".

Since biasing in the middle of the most linear part of the dynamic operating curve is what gives Class A it's advantages (one being of the lack of generated harmonic distortion) I don't see how any of the power generated in a Class A/B amplifier can be called Class A.

The output devices in a Class A/B amplifier are idling (biased) and operating down in the non-linear "cutoff region". A region purposefully avoided in any good Class A design.

Class A/B is it's own thing. It is not a Class A amplifier that becomes a Class B amplifier when more power is needed. That would be an amplifier that uses sliding bias.

Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"


This post is made possible by the generous support of people like you and our sponsors:
  Schiit Audio  


Follow Ups Full Thread
Follow Ups

FAQ

Post a Message!

Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.