Infinity Primus 3000A Mono Amp 300Watts

Infinity PRIMUS-3000A 1-Channel, 300w RMS X 1 Car Audio Subwoofer Amplifier

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Rockford Fosgate Punch P300-1 300W RMS Monoblock Car Audio Amplifier

Infinity by Harman Primus 3000A Mono Car Audio Amplifier 300W RMS Power

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Infinity PRIMUS-3000A Primus 1-Channel, 250w X 1 Subwoofer amplifier