Marine audio source unit Hertz Audio - HMR 20

Hertz HMR 20 Marine Audio Source Unit delivers rugged, reliable, high-fidelity sound for any on-water adventure. Engineered for the elements and tuned by Hertz engineers, this all-in-one system combines weatherproof durability with intuitive control and premium audio performance.

Why the HMR 20 stands out on the water

• IP66 protection with UV resistance (ASTM-D4329) and salt-fog durability (ASTM-B117) to keep performing season after season.
• DAB+ readiness for crystal-clear digital radio in supported regions, plus RDS/AM PLL radio for traditional listening options.
• Bluetooth 5.0 for wireless streaming from your phone or tablet; USB 2.0 port for easy music playback and charging.
• Two stereo outputs across multiple zones, so you can enjoy different sound in cockpit and cabin without swapping systems.
• Digital audio I/O with S/PDIF support for pristine, low-noise connections to compatible amps or processors.
• 3-inch full-color TFT IPS display with high visibility in bright sun; large, backlit controls for easy operation while underway.
• Multicolour button lighting and 4 expertly tuned EQ presets to tailor your sound to any environment.
• Voltage monitoring keeps you informed about battery status, preventing dead-in-the-water moments.

Designed for boating enthusiasts who demand both reliability and spectacular sound, the HMR 20 lets you control music, radio, and digital audio with a fingertip-friendly interface. The robust, weather-resistant chassis means it stays protected from spray, rain, and salt air while maintaining crisp playback in direct sunlight.

Ideal use cases

• Deck-to-cabin multi-zone listening: keep the helm entertained while passengers enjoy separate audio in the dining area or cockpit.
• Sun-drenched helm sessions: the high-contrast TFT display remains legible in bright light, with intuitive large controls for gloves-on operation.
• Digital radio and streaming on fishing trips or family cruises: DAB+ for digital radio where available, and Bluetooth for effortless streaming from smartphones.
• Customizable ambience: match the console with multi-color button lighting and 4 EQ presets to suit pop, rock, jazz, or classical settings.
• Reliable power awareness: use voltage monitoring to ensure your audio setup doesn’t drain the boat battery unexpectedly.

What makes the HMR 20 truly unique is how it translates premium Hertz audio engineering into practical offshore benefits. It supports advanced marine configurations with robust digital connections and flexible multi-zone control, all wrapped in a weatherproof, sea-ready design.

Whether you’re piloting a sailboat, sport cruiser, or weekend fishing rig, the Hertz HMR 20 transforms your on-board soundtrack—delivering immersive sound, effortless control, and dependable performance wherever your voyage takes you.