Monoprice SWA-400 400-watt Subwoofer Amplifier with DSP and Presets - Monoprice.com
Dayton Audio Sa1000 Subwoofer Amplifier Rack Mountable for sale online | eBay
Va-500 Professional Rack Mount Subwoofer Amplifier - Buy Subwoofer Amplifier ,Rack Mount Subwoofer Amplifier,Professional Rack Mount Amplifer Product on Alibaba.com
Focal - 100 IWSUB8 Subwoofer Amplifier - The Source AV
Subwoofer Amplifiers
XMP300 150W Class D Stereo Amplifier | Outdoor Speaker Depot