I replaced tubes in my push-pull monoblocs with a different type, and in an elder moment forgot to re-bias. Everything still sounded great. It was only a week later, when I upgraded a tonearm, that I noticed a slight but very discernible upper bass/lower midrange suckout of probably 3dB. Increasing bias until the tell-tale blue ionisation appeared in the power tubes fixed that instantly.
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!
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!