




Product Description
MM55-HR Premium Hidden Marine Source Unit with Built-In Amplifier (010-03372-00)
Experience next-level marine entertainment with the JL Audio® MediaMaster® MM55-HR, a premium hidden marine source unit designed for seamless integration and superior sound quality. Engineered for high-performance vessels, this NMEA 2000®-certified receiver connects effortlessly to compatible Garmin, Raymarine, Lowrance, and Simrad MFDs or the JL Audio MMR-40 network controller (sold separately), giving you full audio control right from your helm.
Powered by a built-in 100-watt amplifier (25W RMS x 4), the MM55-HR delivers rich, distortion-free sound across multiple zones. With nine channels of audiophile-quality preamp outputs, each with dedicated subwoofer control, you can fine-tune sound performance for different areas of your boat.
Enjoy complete connectivity with Bluetooth® aptX™ streaming, USB input with device charging, and AUX input for direct playback. The unit’s digital AM/FM and DAB+ tuners ensure reliable radio access wherever you cruise. Built to thrive in harsh marine conditions, its IP67-rated, weather-resistant design guarantees years of reliable performance.
Features:
- Hidden marine source unit with built-in 4-channel amplifier (100W total output)
- NMEA 2000® Certified – integrates with Garmin, Simrad, Lowrance, and Raymarine MFDs
- 9-channel preamp outputs with 3 independent audio zones and subwoofer control
- Bluetooth® with Qualcomm® aptX™ for high-quality wireless streaming
- USB and AUX inputs for multiple media playback options
- Digital AM/FM/DAB+ tuner with 18 preset stations
- Intuitive zone management: volume, tone, subwoofer, crossover, and naming control
- Rugged IP67-rated marine-grade construction for real-world durability
- Compatible with JL Audio remotes: MMR-40, MMR-25W, MMR-20-BE, and MMR-5N2K (sold separately)
Details:
- Hideaway marine/powersports digital media source unit
- Requires JL Audio's MMR-40 network remote controller (sold separately) for full functionality
- AM/FM/DAB+ tuner with RDS and 18 presets
- Built-in amplifier (25 watts RMS/50 peak x 4 channels)
- Control three separate audio zones (each with individual subwoofer channels)
- Built-in Bluetooth® connectivity with aptX for music streaming
Expandability:
- USB input — 1 amp output also charges your device while it's in use
- Auxiliary RCA stereo input works with a variety of devices
- 9-channel preamp outputs (3 separate zones possible; 4-volt front, rear, and sub for each zone)
- NMEA 2000® Certified
- compatible with multi-function display units from Garmin, Simrad, Lowrance, or Raymarine
- Works with JL Audio MediaMaster remotes (sold separately)
Additional Info:
- Weatherproof IP67-rated design and construction
- Dimensions: 7.68"W x 2.28"H x 4.96"D
What's in the box:
- Hide-away marine source unit
- Wiring harness
- 4 Screws
- Owner's Manual
- Warranty: 2 years
Why Choose the JL Audio MM55-HR?
Perfect for boaters who demand premium sound in a clean, concealed setup, the MM55-HR brings unmatched audio flexibility and control to your marine environment. Whether you’re upgrading your wake boat or fishing vessel, this hideaway powerhouse delivers JL Audio’s legendary clarity and reliability.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
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