BOSS AUDIO R1100M - High and low level inputs, frequency Response 9 Hz to 50 kHz ±1 dB. Customize the sound with Variable Low Pass Crossover and Bass Boost. 1100 w max power @ 2 ohm x 1 Channel. This powerful 2-ohm stable amplifier features 1100 Watts Max Power with a MOSFET power supply to rock your tunes. Variable low pass crossover, Great For Your Radio, variable Bass Boost, Subwoofers and Speakers.