2.1 Channel Subwoofer Amplifier Board High Power Audio Amplifier Board Module (200W) (motherboard and knob), Premium - Walmart.com
AudioControl LC-1.800 Mono subwoofer amplifier — 800 watts RMS at 2 ohms at Crutchfield
Amazon.com: Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX : Electronics
STPA21-710 | Class-AB 500W RMS Plate Amplifier for Subwoofer Cabinets – Sound Town
PSB-200 Subwoofer Amplifier with Crossover / Phase Control - 200W – Soundavo
Combo: MGK124 1500W Dual 4-Ohm Subwoofer with E3F Amplifier
Amazon.com: XRONG Subwoofer Amplifier Home Audio, Bluetooth Amplifier 5.0 Stereo,2.1 Channel Mini Hi-Fi Class D Integrated Amp 80 Watt x2+80 Watt for Home Outdoor Passive Speakers,Powered Subwoofer : Electronics
1000W Class D Subwoofer Amplifier SMP-1000 | Outdoor Speaker Depot
110V~220V 100W 200W Heavy Subwoofer Digital Power Amplifier Board Active Power Amplifier Board Pure Bass 4ohm 8ohm Diy Speaker