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Memphis Audio SRX500D.1 Street Reference Series Mono Subwoofer Amplifier 500 Watts RMS @ 2 -Ohms Remote Bass Knob Included - Used Very Good - Creative Audio
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Kicker 47KEY500.1 Compact mono subwoofer amplifier with automatic tuning DSP — 500 watts RMS at 1 ohm at Crutchfield
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