Check the listing for details. Sundown Audio Marine Powersports SAMv.2 600 W Micro Subwoofer Mono Amplifier. Condition: New. Listed at 299.99 USD. Sundown Audio Powersports SAM-600D 600W MONO-BLOCK MARINE MICRO CLASS D AMPLIFIER SAMV.2 Sundown Powersports SAMv.2 amplifiers are ideal for all your needs. This micro amplifier fits in tight spaces but dont let its size fool you, they pack great power. It is rated IP67 waterproof to withstand full submersion when getting wild off-road or when its time to clean up when the fun is done. The multi-channel amps have built in Bluetooth, a source unit is not needed just sync to your phone and enjoy. When you're ready to get serious and add subwoofers the mono-block amplifiers link right to your multi-channel RCA for an easy install. Features - Designed Specifically for all Powersport, Marine, Motorcycle Aplications - Conformal Coated PCB and IP67 Water resistant to Withstand OutdoorElements - Monoblock Digital ultra-compact size for easy installations - Power and protection LED lights status indicator - Short circuit, Thermal and Voltage protection - Excellent Signal to Noise and FM Noise Rejection Specifications Amplifier Class: D Amplifier Type: Monoblock RMS Power Output @ 1 Ohm: 600W x 1 Ch RMS Power Output @ 2 Ohm: 415W x 1 Ch RMS Power Output @ 4 Ohm: 230w x 1 Ch RMS Power Output @ 4 Ohm Bridged: N/A THD: 90 dB Gain Range: 0.3-6V Crossover Range: LPF: 50 - 250 Hz Slope Octave: 24 dB Frequency Range: 20 - 500 Hz Boost: 0-18 dB Dimensions: 8.1 x 4.3 x 1.87 (206 x 108 x 47.5 mm)