Kenwood KAC-M5024BT 4-Channel Bluetooth Marine Amplifier

The Kenwood KAC-M5024BT is a compact four-channel Class D amplifier designed for marine, powersports, motorcycle, ATV, UTV, and vehicle audio systems. It combines amplification and Bluetooth audio streaming in one weather-resistant component, making it useful where installing a conventional receiver is impractical. With four amplified channels, it can power a full speaker system or be configured for bridged two-channel operation.

At 4 ohms, the amplifier delivers 50 watts RMS to each of four channels, with 75 watts RMS per channel available at 2 ohms. Its Class D design provides efficient power delivery in a small chassis measuring under eight inches wide. The adjustable high-pass and low-pass filters help tailor the amplifier for full-range speakers or a mixed speaker-and-subwoofer system.

Built-in Bluetooth lets a compatible phone or media device stream directly to the amplifier without a wired RCA source input. The included wired Bluetooth remote provides source control, volume adjustment, track controls, and access to EQ settings. Bluetooth supports A2DP and AVRCP profiles, plus aptX and AAC audio codecs.

The KAC-M5024BT is engineered for exposed installations where moisture, dust, salt spray, and vibration are concerns. Its sealed cast-aluminum chassis, terminal cover, drain tunnel design, and stainless-steel mounting hardware support use in marine and off-road environments. The main unit is rated for IPX7, IPX6, and IP6X protection and is tested to ASTM B117 salt-spray standards.

This amplifier is a practical foundation for a compact audio upgrade that does not require a traditional head unit. Its RCA pre-output can feed an additional amplifier or powered subwoofer for future system expansion. A switchable 2-channel or 3/4-channel output mode and remote-controlled pre-out level provide flexible setup options.

Key Features

• Four-Channel Class D Power: Delivers 50 watts RMS per channel at 4 ohms.
• Direct Bluetooth Streaming: Plays compatible device audio without an RCA source input.
• Weather-Resistant Construction: IPX7, IPX6, and IP6X-rated main unit protection.
• Included Wired Remote: Provides volume, playback, Bluetooth, and EQ control.
• Selectable Crossovers: Adjustable high-pass and low-pass filtering supports system tuning.
• RCA Pre-Out Expansion: Connect an additional amplifier or powered subwoofer.

Design & Installation

The amplifier uses a corrosion-resistant sealed cast-aluminum chassis with a drain tunnel intended to reduce moisture accumulation below the unit. Its one-sided wiring layout, terminal cover, molded strain-relief bushings, and thick die-cast mounting section are intended for organized installation in marine and powersports applications. Stainless-steel self-tapping screws are included for mounting.

Install the KAC-M5024BT on a secure surface with ventilation and route its attached power/ground and speaker-output harnesses safely away from heat, moving parts, and sharp edges. It operates from a 12-volt electrical system with 11 to 16 volts allowable and uses a 40-amp fuse. Connect compatible 2- to 8-ohm speakers, use 4- to 8-ohm loads when bridging channels, and mount the included remote where Bluetooth and playback controls are accessible.