I have an XPA-200 powering two Klipsch RF82-ii's right now, in a dedicated stereo music system. The UPA-500 would be absolutely perfect for my next upgrade - powering a centre channel, 2x sides and 2x rears for a 7.1 surround setup. Or, at an even cheaper price point, a 3x 125w amp in the U-series for a 5.1 setup.
I need a 2-channel amp now for a bedroom system. In the current Summer sale, the UPA-200 is about $50 less than the UPA-500. However, for $50 more, would the UPA-500 be better than the UPA-200 for driving 2 channels? (Obviously, the UPA-500 has more flexibility in being able to drive 5 channels vs. just 2 channels in the UPA-200, if I would need them in the future.) Driving 2 channels, do these two amps sound the same, or is there a difference in sound resolution, refinement and clarity?