FlexAmp Technology allows each pair of amplifier channels to deliver up to 400 W total power, in any ratio Load selector for driving 4 Ω, 8 Ω, 70 V or 100 V on each channel Selectable 80 Hz highpass filter offered on each channel Power saving features - Auto-standby (after 28 minutes with seamless auto-ramp when signal returns) and remote standby input.