Amazon.com: Kicker 46CXA4001 CXA4001-400-Watt Mono Class D Subwoofer Amp : Electronics
Amazon.com: BOSS Audio Systems BE8AE Elite Series Car Audio Amplifier 8 Inch Subwoofer Package – 400 Watt Sub with Passive Radiator, Built-in Class D Monoblock Amplifier, for Truck Boxes and Enclosures Stereo :
Amazon.com: Kicker 46CXA4001 CXA4001-400-Watt Mono Class D Subwoofer Amp : Electronics
Old School Coustic Power 401DB 400 watt Class D Subwoofer Amplifier Car Audio | eBay
Amazon.com: BOSS Audio Systems BE8AE Elite Series Car Audio Amplifier 8 Inch Subwoofer Package – 400 Watt Sub with Passive Radiator, Built-in Class D Monoblock Amplifier, for Truck Boxes and Enclosures Stereo :
Kicker CXA400.1 - 400W Mono Class D Subwoofer Amp - 46CXA4001T
400w Universal Class Ab Digital 2 Channel Black Aluminum Alloy High Power Car Audio Amp Subwoofer Amplifier - Amplifiers - AliExpress