JL Audio JD250/1 - Monoblock Class D Subwoofer Amplifier 250W | eBay
Monoprice SWA-400 400-watt Subwoofer Amplifier with DSP and Presets - Monoprice.com
Dayton Audio - SPA250DSP 250W Subwoofer Plate Amplifier with DSP
Bowers & Wilkins CI Series Subwoofer Amplifier-SA250Mk2 Residential & Commercial Electronics, IL, 62711
AIYIMA 250W Subwoofer Amplifier Board High Mono Power Amplifier Board DIY With 200W Toroidal Transformer For 10 12 Inch Speaker|Amplifier| - AliExpress
Dayton Audio - SPA250DSP 250W Subwoofer Plate Amplifier with DSP
200w 250w Subwoofer Power Amplifier Board / High Power Amplifier / Subwoofer Pure Bass Amplifier / One Board Home Theater H093 - Home Theater Amplifiers - AliExpress
Infinity Primus 3000A 1-Channel 250w Subwoofer Amplifier