JBL Concert A704 1000W 4-Channle Compact Footprint Amplifier. Equipped with Adjustable High-Pass/Low-Pass Crossover Filter, Auto Turn ON Facility, Can Connect Speakers, Tube Subwoofers, Subwoofers. : Amazon.in: Electronics
JBL MA704 4-Channel 1000W Peak Power Marine Powersports Car Boat Amplifier, Metra IBR65 Waterproof Flush-Mount Bluetooth Audio Receiver with AUX Input - Road Entertainment
Amazon.com: JBL GX-A604 4-Channel Full Range Amplifier : Everything Else
JBL CLUB-A754 High Performance 4-Channel Car Amplifier, Black - iCuracao.com