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Amazon.com: OSD Audio SMP200 Class D Digital Subwoofer Amplifier Rated 200W Max : Electronics
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Amazon.com: Sound Town Class-D Plate Amplifier for PA DJ Subwoofer Cabinets, 700W RMS, w/High-Pass Filter Outputs (STPAS-G800) : Musical Instruments
110v ~230v 1000w Home Amplifiers Audio Hifi Bass Audio Power Amplifier Home Theater Amplifier For Subwoofer Speakers - Home Theater Amplifiers - AliExpress