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Amazon.com: Polk Audio PA D5000.5 900W RMS, 5-Channel Class D PA Series Car Amplifier (PAD5000.5),100 Watts x4; 400 Watts x1 : Electronics
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Amazon.com: Polk Audio DB6502 DB+ Series Component Speaker System for Car & Marine - 6.5" 2-Way Speaker, 4-Ohm Impedance, 35-23kHz Frequency Response, Polypropylene Woofer Cone & Separate Silk Dome Tweeter : Electronics
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