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Pyle PLMRMBT7S Hydra Series 4-Channel 1,200-Watt Water-Resistant Marine Class AB Amp with Bluetooth
APSR-4120GS - 780W 4-Channel Class D Marine Amplifier
Kicker KMA150.2 KMA Series 2-channel marine amplifier — 40 watts RMS x 2 at Crutchfield
Amazon.com: Luftmusic Bluetooth Marine Amplifier 4 Channel - Full Range Marine Amp - Waterproof Motorcycle Amplifier - Wireless Remote, Easy Installation - Compact Bluetooth Amplifier for Bike, Golf Cart, ATV
Amazon.com: Pyle Hydra Marine Amplifier - Upgraded Elite Series 3000 Watt 8 Channel Bridgeable Amp Tri-Mode Configurable, Waterproof, MOSFET Power Supply, GAIN Level Controls and RCA Stereo Input (PLMRA820) : Everything Else