Bias adjustment on solid state amplifiers


Why is there no mention of this in manuals, etc, with solid state amps? It seems with tube amps, there's a built in way to do it and/or mention of it in their manuals.
128x128slaw
Ideally, SS amp bias would be set according to the average voltage coming in on your mains. 
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The main reason to increase the bias of a SS amp is to reduce crossover (i.e. notch) distortion, but it is not really something a consumer should do, and the benefits are rarely worth the risk to the transistors and power supply.

Where exactly to set the bias point for a given transistor is a matter of some art. Enough to eliminate gross distortion but not enough to warm the room.

Best,

E
I can bias mine. If I read right (and I could be mistaken) but the bias pots would set how much my amp runs in class A vs A/B.