Planet Audio AC4000.1D Class D Monoblock Car Amplifier - 4000 High Output, 1 Ohm Stable, Low Level Inputs, Low Pass Crossover, Bass for Subwoofer. Item model number : AC4000.1D. For double the performance, strap on another AC4000.1D for a total power of 8000 Watts @2-Ohms.
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