Source AMP2.1 Class AB Plate AMP Module on m.alibaba.com
SPA250 250 Watt Subwoofer Plate Amplifier
110v ~230v 1000w Home Amplifiers Audio Hifi Bass Audio Power Amplifier Home Theater Amplifier For Subwoofer Speakers - Home Theater Amplifiers - AliExpress
PSB-200 Subwoofer Amplifier with Crossover / Phase Control - 200W – Soundavo
B&W ASW850 Subwoofer Amplifier Board *As Is* | Reverb UK
Subwoofer Amplifiers
Amazon.com: Sound Town Class-D Plate Amplifier for PA DJ Subwoofer Cabinets, 700W RMS, w/High-Pass Filter Outputs (STPAS-G800) : Musical Instruments
JB Systems PSA8 Built-in PA HiFi Power Amplifier Active Module Amp Amplifier Subwoofer 240W | eBay
Dayton Audio SPA-F Subwoofer Plate Amplifier Mounting Frame for SPA250DSP and SPA500DSP