Amazon.com: Subwoofer Flat Panel Amplifier 12V Car Amplifier Plate High Power Aluminum Car Subwoofer Plate Amplifier Plate For Heat Dissipation Suitable for 8-12 Inch Woofers and Dual Voice Coil Speakers : Electronics
Subwoofer Amplifier Board Mono Car Audio Amplifiers (toshiba Tube Plate ) 200w Amplifier Board 12v For 10-12inch Speakers - Home Theater Amplifiers - AliExpress
110/220V Mono 200W Subwoofer Digital Amplifier Board | Best Audio and Lighting Equipment