What the heck is bias anyway?


I'm getting a new tube amp that will need to be biased. The process of doing it seems fairly straight forward, but I am curious: what are you actually doing when you bias an amp? In english, for us technical Ludites.
grimace
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Bias is simply the amount that the device is turned on(a % of max current) without signal(music) passing through it.
So it's basically adjusting the current to the tube to make sure the appropriate amount of juice is getting in and out of it. Not too much, and not too little. I think I have it.

Thanks Elizabeth!