Pyle Model : PLMRA620 Elite Series Marine 6-Ch. Amplifier Elite Series Waterproof Amplifier, Bridgeable 2000 Watt 6-Channel Amp Features: Bridgeable Audio Amplifier Tri-Mode Configurable 6-Channel Amp System 2 Ohm Stereo Stable MOSFET Power Supply Marine Grade Construction Waterproof Marine Rating IP-01 Hi/Lo Electronic Crossover Network Adjustable Input GAIN Level Controls RCA (L/R) Input Connector Jacks Variable High Pass, Low Pass & Bass Boost Controls Remote Bass Boost Controller Connector Jack Gold-Plated Speaker Output Terminal Connectors Anti-Thump Delay Circuitry Power & Protection LED Indicators Built-in Thermal, Overload & Speaker Short Protection Heavy Duty Aluminum Alloy Heatsink Remote Turn ON/OFF Technical Specs: 4 x 100W + 2 x 250W RMS @ 4 Ohms 4 x 250W + 2 x 500W MAX @ 4 Ohms 4 x 175W + 1 x 400W RMS @ 2 Ohms 2 x 400W + 1 x 900W MAX @ 4 Ohms Bridged Amplifier Class: AB Fuse Type: 40A x 2 Frequency Response: 15 - 30kHz Input Impedance: 10k Ohm Input Sensitivity: 250mV Variable Bass Boost: 0 +/- 18dB @ 60Hz S/N Ratio: >95dB T.H.D.: <0.04% Power Supply: DC 12V Dimensions (L x W x H): 19.6'' x 10.9'' x 2.7'' The Pyle Elite Series Amps provide waterproof power for all of your speaker needs. The marine grade waterproof construction and high-power efficiency ratings provide performance and reliability -- rain or shine! These multi-channel amplifiers are perfect for the backyard, boat or even by the pool! Additional features include MOSFET power supplies, built-in electronic circuitry protection, heavy-duty aluminum heat sinks and more. Enjoy versatile waterproof performance and next level sound amplification with the Pyle Elite Series Amps. (Models: PLMRA200, PLMRA400, PLMRA420, PLMRA620, PLMRA820).