Used in good working condition. JL Audio 300/4 - 4 Channel Amplifier Specifications: Rated Power (stereo): 75 W RMS x 4 @ 1.5 ohm-4 ohm (11V-14.5V) Rated Power (bridged): 150 W RMS x 2 @ 3 ohm-8 ohm (11V-14.5V) THD at Rated Power: 108.5 dB below rated power Frequency Response: 5 Hz-30 KHz (+0, -1dB) Damping Factor: >200 @ 4 ohm per ch./50 Hz Input Range: switchable from 200mV-2V RMS to 800mV-8V RMS Dimensions: 13.4"L x 9.25"W x 2.36"H Differential-Balanced Input Topology: (2 pairs of inputs) Front Crossover: fully-variable (50 Hz-5 KHz), selectable-slope LP or HP (12 or 24 dB per octave) Rear Crossover: fully-variable (50 Hz-5 KHz) selectable-slope LP or HP (12 or 24 dB per octave) Speaker output connections: accept up to 8ga. wire +12V Ground connections: accept up to 4ga. Wire 300/4 - JL Audio 4 Ch. Amplifier 300 / 4 300-4 $175