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Amazon.com: Pyle Home Bluetooth Audio Power Amplifier 2X120 Watt - Portable 2 Channel Surround Sound Stereo Receiver w/ USB - Amplified Subwoofer Speaker, CD DVD, MP3, iPhone, Phone, Theater, PA System -PTAU45.5 :
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Amazon.com: PRORECK PR-122M Complete 1500W Dual 12" Car Subwoofer, Includes Loaded Enclosure with Mono Block Amplifier,Wiring Installation Kit : Electronics
Amazon.com: Soundavo PSB-200 Subwoofer Amplifier with Crossover/Phase Control - 200W : Electronics
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Amazon.com: OSD Audio SMP300 Class D Digital Subwoofer Amplifier Rated at 300W Max : Electronics
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