This integrated amp from Pyramid will produce 2X200wpc 20-20KHz into a 4ohm load (verified when I called manufacturer). I can pick one up new (open box) for $80 from a local store. Think this would make a good amp for a pair of passive subs? I know people have used 100wpc KLH receivers and vintage gear to power their subs, but I'm not familiar with Pyramid home audio stuff. This thing has to be better quality than a KLH, doesn't it?