After my receiver died, I bought a new pre/pro but needed 2 more channels of amplification for my HT surrounds. I stumbled upon the cheap-as-mud Audiosource AMP100, a 50 wpc job that's normally used for "zone 2" amplification like background music. It also comes with its own volume knob.

Obviously, I'm more intent on controlling volume and speaker balance with the processor, but what should I set the amp volume control at? If I set it to full do I risk clipping, or is the amp volume knob redundant and should be set all the way up (the way you would on, say, a sub crossover knob)?