Tube Amp Archive

In Ken Fisher's "Train Wreck Pages" in Gerald Weber's book, Ken states that bias can be 10-50ma. He believes that you can get a more consistant sound by setting the bias voltage, C-, rather than the bias current. I don't know that I completley agree, but who can argue with Ken :wink: Basically 29ma...

Forgive my lack of knowledge but here’s my question: I have a used Expression I bought a while back, I got bored one day so I pulled the chassis to change the power tubes and check my bias. I use a Weber Bias Rite unit. I check the bias voltage on the KT77's that were in it and they seemed way off a...