Power Acoustik RZR12500D 2500W Subwoofer Amplifier

Pioneer GM-DX871 1-Channel Class D Mono Subwoofer Amplifier

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Power Acoustik RZR12500D 2500W Subwoofer Amplifier & Audio Line Output Converter

2 Power Acoustik RZR12500D 2500W Subwoofer Amplifier

Pioneer GM-DX871 1-Channel Class D Mono Subwoofer Amplifier

Infinity Kappa One 6 Mono subwoofer amplifier — 600 watts RMS x 1 at 2 ohms

Pioneer GM-DX871 1-Channel Class D Mono Subwoofer Amplifier