Hydra Marine Amplifier - Upgraded Elite Series 1000 Watt 4 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input - PLMRA420

4 CHANNEL BRIDGEABLE AMPLIFIER: Designed as a 4 Channel bridgeable marine amplifier that energizes your speakers and offers universal compatibility. It also incorporates high and low electronic crossover networks or pass filters. PREMIUM RCA INPUT: For convenient operation, this marine amplifier is equipped with premium RCA inputs. Should your marine receiver not have RCA output jacks, you may link speaker output leads to the high-level inputs. SHORT PROTECTION: Constructed with a robust aluminum alloy heatsink, thermal overload speaker short protection, and an LED indicator. These components safeguard the amplifier and your vehicle's electrical system from short circuit conditions. POWERFUL 1000 WATT: This amplifier provides robust performance with a 1000 WATT maximum output and a dual MOSFET power supply. It contains dual adjustable input GAIN level controls for 10k Ohm (Low) and 100 Ohm (High) speaker impedance. MARINE GRADE: Featuring an IP-01 marine rating, it is waterproof ready. It's built with gold-plated speaker output terminal connectors to resist corrosion for extended use