I've Just Learned What Amplfier Bias Is...

What the heck did I just read?

Certain threads really need a warning tag of some kind.

@tyray
As fas as I'm concerned you can't go wrong with Klaus. He hooked me up with a pair of his Khartago mono blocks with Kismet boards inside. Told him what I had for a preamp and what speakers I had and he took it from there.

When the shipping company delivered them one had obviously taken a tumble down the stairs and was beat. It lasted a week before it gave up the ghost. Told Klaus and he shipped a new one out without hesitation.

I'm still new to this hobby too but between everyone here and vendors like Odyssey its a fun journey. I 2nd @kakomess' referral of Harley's book, The Complete Guide To High End Audio, is a great reference source.

Well, that about covers it.

Somehow this OP seems disingenuous to me. But maybe that's my bias!

Horrible thread.  Bias is simply voltage, e.g. a difference in electric potential, required to make a circuit or component function.  A transistor requires a bias voltage to function properly.  But so does a diode.  And that is specified according to the manufacturer, freely available on datasheets.  It's not something to tweak.  Vacuum tube bias / biasing for guitar amps is frequently required when changing tubes and some players may prefer to tweak the bias to make the tubes run 'hot'.  This can however shorten the life of the tubes and in extreme cases melt any PCB is it near.  Guitar tube amp biasing tweaks are NOT for audiophile situations.  Guitar tube amps are designed to be pushed quickly into breakup and harmonics and feedback, audio tube amplifiers are not.  I just changed tubes and biased my guitar amp.  The EL84s were 81mv average but I changed brands and the new tubes read around 60mv which is more in spec. so I didn't adjust anything.  When any tubes are changed, the bias may need adjusting, but its not something you tweak to a room.  And bias can drift.  So, for any tube amp, guitar or "audio", biasing may need periodic adjusting within a specified range...but an "audio" amp shouldn't be "biased" to produce a particular sound.  That IS what tone controls are for, if you need those or want them in the signal path.  Biasing can be done in a closet.  Biasing an amp in a particular "setting" to tune the amp is just garbage if someone is claiming that.  A "room" does not determine circuit design and unless you seek distortion, leave dials on the circuit boards where they are.