Boss Audio MGV520B Marine Stereo w/AM/FM/BT/USB/Rear Camera [MGV520B]

Boss Audio MGV520B Marine Stereo – 240W Bluetooth Receiver with USB, AM/FM, and Rear Camera Input – Black

Powerful, Waterproof, and Packed with Features – All in a Compact Gauge-Style Marine Stereo

The Boss Audio MGV520B Marine Stereo is your go-to marine receiver for reliable sound, Bluetooth streaming, and safety-enhancing features—all in a compact, waterproof design. With 240 watts of peak power (60W x 4 channels) and IPX6-rated protection, this stereo delivers strong, clear sound on the open water while standing up to salt spray, sun, and tough marine conditions.

Its 3-inch multicolor LED display offers high visibility and easy navigation. The gauge-style chassis fits standard 3.55" openings, making it perfect for boats, yachts, RVs, or ATVs. Stay safe and connected with Bluetooth hands-free calling, USB and AUX playback, and a rear camera input for docking or reversing visibility.

Why You'll Love It

• Gauge-Style Fit – Easy drop-in installation for standard 3.55" gauge openings

• 240W Audio Power – Pushes 60 watts to each of four channels for bold, crisp marine sound

• Bluetooth Connectivity – Stream audio and take calls wirelessly with your phone

• Rear Camera Input – Add a compatible backup camera for safer navigation

• Weatherproof Protection – IPX6-rated front panel and conformal-coated circuits withstand the marine environment

• Customizable Sound – Built-in 3-band EQ with user-selectable audio modes

Key Features

IPX6 Waterproof Rating

• Sealed against water jets, rain, and salt spray

• UV-resistant front panel prevents sun damage

Bluetooth Streaming + Hands-Free

• Connect your phone for music and calls

• Works with Spotify, Pandora, and other audio apps

Rear Camera Compatible

• RCA input supports marine-grade backup cameras

• Helps with docking or navigating tight spaces

Flexible Connectivity

• USB input for MP3s and device charging (1A)

• AUX input for MP3 players and wired connections

• Front and rear RCA pre-amp outputs for system expansion

Visual & Audio Control

• 3" multicolor LED screen is bright and easy to read

• 3-band EQ lets you fine-tune bass, mid, and treble

• Stores up to 18 FM and 12 AM presets

Perfect For

• Center console boats, pontoons, and fishing vessels

• RVs and ATVs needing durable outdoor audio

• Marine audio system upgrades with Bluetooth capability

• Small boats needing a compact, gauge-style receiver

Technical Specifications

What’s in the Box

• MGV520B Marine Stereo Receiver

• Mounting Hardware

• Owner’s Manual

Sold individually as a head unit.

Why Choose the MGV520B?

✅ Compact gauge-mount marine receiver with a modern display
✅ 240W peak output for rich sound over engine or wind noise
✅ Bluetooth-enabled for audio streaming and hands-free calls
✅ Rear camera input enhances safety at the dock
✅ IPX6 waterproof and UV-resistant for long-lasting use
✅ 3-year platinum warranty when purchased from authorized dealers

Boaters love the clean install, strong Bluetooth signal, and backup camera support. While the screen may be hard to read in direct sun and Bluetooth may occasionally require re-pairing, users say the MGV520B delivers unbeatable value and functionality in a compact form.

Frequently Asked Questions

Is this stereo waterproof?
Yes, the MGV520B is IPX6-rated. It resists spray, jets, and heavy marine conditions—but it’s not submersible.

Does it support rear cameras?
Yes. The RCA input allows connection of compatible marine backup cameras (camera sold separately).

What speakers can I pair with this?
The MGV520B works best with 4-ohm marine speakers like Boss Audio’s MR6W or MR6B series.

Does it stream music from smartphones?
Absolutely. It supports Bluetooth streaming, AUX, and USB playback (note: USB does not support audio streaming from iPhones/Androids).

Can I expand the system?
Yes. Use the RCA pre-amp outputs to add amps, subs, or additional speakers.

Shop the Boss Audio MGV520B Today

Take your marine sound system to the next level with the Boss Audio MGV520B Marine Stereo. With Bluetooth streaming, rear camera input, and rugged IPX6 weatherproofing, it’s ready for the open water. Order now and enjoy powerful, hands-free audio wherever you cruise.

Owner's Manual (pdf)
Brochure (pdf)