JL Audio MMA-1-HTML MediaMaster MFD Interface
The MMA-1-HTML brings MediaMaster audio controls to the boat’s compatible multifunction display. It reproduces the source unit’s menus and screen information at the helm, so you can select music and adjust audio without moving to the stereo. The interface connects to the display by Ethernet and to the boat’s NMEA 2000 network through Micro-C. It carries control data rather than amplified speaker audio.
Compatibility and installation
- Source units: MediaMaster MM105, MM105-HR, MM55 and MM55-HR.
- Display connection: Ethernet cable between the interface and an MFD supporting MediaMaster integration. Cable sold separately.
- Network connection: Micro-C to the NMEA 2000 backbone. Network cables and connectors sold separately.
- Power: 10–15.9 VDC through the supplied harness with a 1 A fuse.
- Mounting: secure the 172 × 101 × 44 mm module with the four supplied screws.
- Updates: the USB port is used for software updates.
To confirm your display, email [email protected] with its make and model. We will reply as soon as possible.
Technical specifications
| Model | MMA-1-HTML |
|---|---|
| Dimensions (W × D × H) | 172 × 101 × 44 mm |
| Maximum current | 150 mA |
| NMEA 2000 load | Len 1 (50 mA) |
| Connections | One Ethernet port, one Micro-C port and one USB update port |
| Operating temperature | −20 to +65 °C |
| Interface languages | English, French, German, Italian and Spanish |
| Included | Interface module, power harness with 1 A fuse and four stainless steel mounting screws |





