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Over and Under Biasing as means for tone control

What is the word about using bias as tone control?

First what is the risk to Tubes and equipment by doing that?
Second what is the actual effect of doing that as far as tone?

I know in the Guitar world it is not uncommon to do, but Guitar Amps are going for shades of distortion, unlike HiFi listening amps.

I would be interested to hear what people think.
Thanks!
dumbeat

Showing 1 response by erik_squires

erik_squires
16,644 posts
 
Well in consumer-land, tone control refers to bass and treble balance controls. I'm not sure bias will affect  this in that sense.

Under-biasing risks excessive distortion, over bias risks excessive heat and shortened (possibly VERY short) tube life.
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