ACCESSORIES
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Product Summary
Compact marine stereo with built-in amplifier and multi-zone control. Designed for boats needing a balance between performance and simplicity without requiring a full external amplifier setup. Suitable for small to mid-size systems with room to expand.
Key Points
- Built-in amplifier can power speakers directly without external amp
- Supports up to three audio zones with separate control
- Colour display remains readable in bright conditions
- Bluetooth, USB and radio inputs for flexible playback
- Preamp outputs allow system expansion with external amplifiers
- NMEA 2000 compatibility for control via compatible displays
- Suitable for both standalone systems and upgrades
Specifications
- Brand: JL Audio
- Model: MediaMaster 55 (010-03365-00)
- Type: Marine stereo (head unit with amplifier)
- Display: 2.8" full-colour LCD
- Connectivity: Bluetooth, USB, AUX (RCA), AM/FM, DAB+ (EU), NMEA 2000
- Power: 12V wired (built-in amplifier: 100W total / 25W RMS x4)
- Mounting: Flush mount
- Waterproof Rating: Weather-resistant (exact rating not specified)
- Audio Zones: 3 audio zones with subwoofer outputs
- Outputs: 9-channel preamp outputs
- Features: Built-in low-pass crossover, App and remote control compatibility (optional)
What's Included
- JL Audio MediaMaster 55 stereo
- Mounting hardware
- Documentation
Best Suited For
Mid-range systems needing built-in power with expansion options. Key advantage: Can run speakers directly while still supporting future upgrades. Keep in mind: Lower output compared to systems using dedicated amplifiers.
Need Help?
Here we answer the most common questions. If you can't find the answer to your question, please email us.
Can you recommend the right transducer for my setup?
Can you recommend the right transducer for my setup?
Choosing the wrong transducer is one of the most common (and expensive) mistakes we see. We’ll recommend the right one based on your hull, where and how you fish, and the depth you actually use — not just what looks good on paper.
Do you offer installation or setup advice?
Do you offer installation or setup advice?
Yes — and it matters. Even the best Garmin unit won’t perform if it’s installed badly. We’ll guide you on placement, wiring and setup so it works properly in real conditions, not just at the dock.
What accessories should I prioritise first?
What accessories should I prioritise first?
Most people overspend in the wrong places. We’ll help you get the fundamentals right first — a proper unit, the correct transducer, and a setup that works — before adding extras that actually add value.
What Garmin products do you supply?
What Garmin products do you supply?
We supply a full range of Garmin marine electronics — from chartplotters and fishfinders to transducers, radar, VHF and mounting solutions.
More importantly, we don’t just sell boxes. We help you choose equipment that actually works for how you use your boat — whether that’s serious fishing, coastal cruising, or family days out.
How do I know which Garmin unit is right for my boat?
How do I know which Garmin unit is right for my boat?
It comes down to how you use the boat in real conditions — not just screen size or specs.
Offshore fishing, inshore use and family boating all demand different setups. We’ll guide you based on real-world use so you don’t end up overpaying for features you don’t need — or missing ones you do.
Can Garmin units be networked together?
Can Garmin units be networked together?
Yes — and when done properly, it makes a big difference.
Garmin systems can link chartplotters, sonar, radar and other equipment into one seamless setup. We’ll help you build a system that works together properly, rather than ending up with separate bits of kit that don’t fully integrate.
Are Garmin products easy to use?
Are Garmin products easy to use?
They’re some of the most user-friendly systems available — but setup is key.
Configured properly, they’re straightforward and reliable. Set up badly, and even simple things become frustrating. We make sure everything is set up in a way that makes sense when you’re out on the water.
Do I need charts with my Garmin device?
Do I need charts with my Garmin device?
In most cases, yes.
Charts are what turn your unit into a proper navigation tool. We’ll recommend the right mapping for your area so you’re not relying on incomplete or unsuitable data.
Are Garmin accessories compatible with Honda-powered boats?
Are Garmin accessories compatible with Honda-powered boats?
Yes — Garmin electronics work independently of your engine.
Some setups allow engine data to be displayed through your Garmin system, depending on configuration. We can advise on what’s possible for your specific boat.
Do you only sell what you have in stock?
Do you only sell what you have in stock?
No.
We don’t push products just because they’re on the shelf. If something isn’t right for your setup, we’ll tell you — and we’ll source what is.
Can you supply complete electronics packages?
Can you supply complete electronics packages?
Yes — and that’s how many of our customers prefer to do it.
We build complete Garmin setups tailored to the boat and how it’s used — from simple, reliable systems to fully networked setups with sonar, radar and more.
Everything is chosen to work together properly. Contact us - rather than ordering online - for a complete electronics package.
What if I’m new to marine electronics?
What if I’m new to marine electronics?
That’s exactly where we help most.
We’ll explain what actually matters, what doesn’t, and make sure you end up with a setup that’s reliable, easy to use, and suited to your boating — without overcomplicating it.


