Amazon.com: KENWOOD KAC-M5024BT Compact 4-Channel 600 Watt Car Amplifier with Bluetooth Streaming. Built for Marine, ATV and Powersport Applications. Waterproof, Dustproof, Rust Proof and Vibration Proof : Electronics
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Kenwood KAC-M3004 Compact 4 Channel 400W Max Power Amplifier