Sony Xplod XM-XM-404EQX 4/3/2 Channnel Car Audio Power Amplifier.

Performance RMS Power Output (Watts x Channels) 40 x 4 Peak Power Output (Watts x Channels) 80 x 4 Power at 2 Ohms (Watts x Channels) 50 x 4 Power at 1 Ohm (Watts x Channels) --- Bridged Power (Watts x Channels) 100 x 2 Minimum Impedance Bridged 4 Minimum Impedance Unbridged 2 Best Frequency Response 5-100k Hz THD at Rated RMS Power 0.04% Signal to Noise Ratio 100 dB Input Voltage 14.4v

Features Amplifier Class AB Built-in DSP --- Remote Control --- Low-Pass Crossover Frequency 50-200 Hz Low-Pass Slope (dB/octave) 12 dB High-Pass Crossover Frequency 50-200 Hz High-Pass Slope (dB/octave) 12 dB Bass Boost 5-band EQ Bass Boost Frequency 50 Hz Fan Cooled No Fuse Rating 30 x 1 Speaker Level Inputs --- Preamp Outputs No Width (inches) 12-3/4 Height (inches) 2-1/4 Depth (inches) 12-1/4