As your Cambridge has pre-outs, I'd recommend a Yamaha P5000s ($450 starting bid), same price @ GuitarCenter (formerly sold @ Crutchfield. NOT to be confused w/newer PX series, which I believe uses an off-the-shelf chip & fans run constantly. 2-channel power amplifier power output at 20-20,000 Hz: 500 watts RMS per channel at 8 ohms 700 watts RMS per channel at 4 ohms 1400 watts RMS (mono) at 8 ohms in bridged mode Yamaha's exclusive EEEngine technology, which keeps operational costs down by significantly reducing AC power consumption and heat generation. P Series - Features - Yamaha - United States My P7000s' variable fans have never come on. You would need XLR=>RCA cables.