After owning a number of integrated amps, I have been using a Cyrus Two with the PSX auxiliary power supply for a couple of years now. This thing is strange - it's made up of two chassis (shoebox size) with two power cords, and the "Two" unit has two selector (source/record) knobs and a gain knob. It is super minimalist, you see. The headphone jack is in the back, and the RCA jacks face up. With the PSX connected, the power supply in the "Two" powers the preamp section, and the more massive (by far) power supply of the PSX powers the power amp section, yielding a high-current 70 watt amp with good sound overall, but with amazing bass control.