Amazon.com: JBL- Marine 4-Channel power sports amplifier, 75 x 4 : Electronics
JBL R3500 Marine Bluetooth Stereo LCD Digital Media Receiver Bundle With 4x JBL 6.5" Black Marine RGB Speakers, 4-Channel 1000W Max Marine Amplifier, Amp Wiring Kit, Black Antenna - Road Entertainment
JBL MA704 4-CH 1000W Marine Amplifier, Metra IBR65 Bluetooth Receiver w/ AUX | eBay
JBL MA4505 5-Channel Marine Amplifier Bundle with Four Kicker 45KM84L 8-Inch Marine Coaxial Boat Speakers and LED Remote Control. Full Range 65Wx4 & 500Wx1 Amp and Multi-Color Illuminated Speakers Ki - Walmart.com
JBL MA6004 580 Watt Amplifier With 4 MS6510 6.5" Waterproof Marine Speakers - Rock The Boat Audio