I was looking to use this amplifier to push some infinity kappa speakers. Now its 38x4 @ 4 ohm, and 75x4 @ 2 ohm. I would need 75 watts, so my two questions are is this a good amplifier for sound quality and also is it possible to run the speakers at 2 ohm to get the 75 watts they need or do I need to choose another amplifier?
try it at 4 Ohms and see how it does first. you may be surprised at how loud it gets. remember double the power is only a +3dB gain in volume, so it's not like the speakers would be twice as loud going from ~40 to ~75 watts wach.
if you want 75W each, get two of those amps, and bridge them to two channels each. one amp for fronts, one for rears.