The MP-A Series music and paging amplifiers build on a 50-year legacy of QSC amplifier dependability and quality. The MP-A Series offers an incredible amount of flexibility for business music and paging applications, while maintaining high efficiency and low total cost of ownership. FlexAmp Technology allows each pair of amplifier channels to deliver up to 400 W total power, in any ratio Class-D output circuitry and switchmode power supply for high efficiency and low cost of ownership 1RU amplifier design for rack space savings 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 Amp status remote output Rock-solid QSC amplifier dependability