Kicker 46CXA800.1T CX Series mono subwoofer amplifier — 800 watts RMS x 1 at 1 ohm at Crutchfield
Amazon.com: Facmogu ST-838 2.1CH Subwoofer Amplifier Audio Stereo Bass Amp, RMS 20Wx2+40W Class D Amplifier with Subwoofer Output, 80W Mini Sub Bass Amp Digital Power Amplifier with Power Supply - Black :
Amazon.com: Facmogu S-299 40Wx4 Bluetooth Power Amplifier with Active Subwoofer Output Max 800W 4.1CH Subwoofer Amplifier Hi-Fi Integrated Mini Speaker Amp Audio Sub Bass Amp Remote Control & 12V Power Supply :
Pioneer 160-Watt Subwoofer with Built-in Amplifier TS-WX130DA - The Home Depot
Bluetooth Amplifier | Subwoofer Amplifier | | Class D Amplifier | Hifi Stereo Bass Amplifier - AIYIMA A03