SFB-600D ^^ Sundown Audio Class D Monoblock AmplifierFEATURES: Digital Class-D Mono Block AmplifierDual MOS-FET PWM Power Supply1 Ohm Stable Load12 dB/Octave Variable Low Pass Filter12 dB/Octave Variable High Pass Filter9 dB/Octave Variable Bass Boost4 Way Protection Ciruit (Thermal, Voltage, Speaker Short, DC Offset)Wired Remote Control with Clipping IndicatorSPECIFICATIONS (Tested @ 14.4 v): 1 ohm Mono RMS - 600W2 ohm Mono RMS - 350W4 ohm Mono RMS - 250WRecommended Fuse Rating - 60ALow Pass Filter (Variable) - 80Hz-20kHzHigh Pass Filter (Variable) - 15Hz-1kHzBass Boost @ 50Hz - 0-12dBInput Sensitivity - 5V MaxS/N Ratio - 86dBWorking Voltage - 10.5 v- 15.5 vDimensions (inch) - 7.25 x 5.00 x 2.50