Mono Class D Bass Amplifier Features and Functions : - Single channel, Class D, Bass Amplifier - Compact chassis - Variable input gain control - Variable electronic crossover - Variable subsonic filter - Variable bass boost control - Variable center frequency for bass boost - Variable phase control - Strappable to use a pair of amps on a single voice coil - Dash mount remote gain control Specifications : - Power @ 1Ω: 1 x 500 watts - THD @ Rated Power lt; 0.2%THD - Power @ 2Ω: 1 x 300 watts - Power @ 4Ω: 1 x 200 watts - Signal to Noise Ratio gt; 90dB - THD + Noise lt; 0.2% - Efficiency gt; 85% - Frequency Response 10Hz to 200Hz ±1dB - Input Sensitivity .25v to 5v - Dimensions in mm: 160(W) x 52(H) x 179(L) Overall: 160(W) x 52(H) x 205(L)