Revamp 2250 2Ch Class D Fanless Amp 2 x 250W @ 4Ω 1UREVAMP2250 is a professional 2 channel digital power amplifier with 2 x 350 watts output power @ 4 ohms, but is also bridgeable (1 x 700 watts @ 8 ohms). The unit incorporates a high efficient SMPS power supply and outputs with efficient Class D output topology. The digital signal processor inside operates with one simple push button at the back of the unit to select an operating mode (6 presets). An example of a preset is the combination CH1