Pyle PLMRA400 4 Ch 400 Watt Waterproof Marine Boat Power Audio Amp

4 Channel Amp System Dual MOSFET Power Supply Marine Grade Construction Waterproof Marine Rating IP-01 Dual Adjustable Input GAIN Level Controls Dual High Level Speaker Input Connectors Dual RCA (L/R) Input Connector Jacks Gold-Plated Speaker Output Terminal Connectors Adjustable Input GAIN Level Control Anti-Thump Delay Circuitry Built-in Thermal, Overload & Speaker Short Protection Heavy Duty Aluminum Alloy Heatsink Power ON LED Indicator Remote Turn ON/OFF Technical Specs: Output Power: 100 Watt x 4 MAX Amplifier Class: AB Fuse Type: 20A Input Gain Impedance Adjustment: 1 - 300mV Frequency Response: 15 - 30kHz +/-3dB Input Impedance: 10k Ohms (Low), 100 Ohm (High) Input Sensitivity: 250mV (Low), 2.5V (High) T.H.D.: <0.04% Power Supply: DC 12V Matching Speaker Impedance: 4-8 Ohms Dimensions (L x W x H): 9.0'' x 7.9'' x 2.0'' Sold as: Unit Weight: 4.14 lbs.