Kicker 46CXA4001 CXA4001-400-Watt Mono Class D Subwoofer Amp. Kicker 46CXA4001 CX400.1 400 Watt RMS 1-Ohm Stable Mono Amplifier. Using a Class-D power plant, the CXA400.1 features a variable bass boost with KickEQ, giving you as much as a 6dB of extra bump.
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