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MP5+ Stereo (MP521, AQ-MP-5UBT-S)
MP5+ Stereo (MP521, AQ-MP-5UBT-S)

Support Resources for the MP5+ Stereo

Written by Aquatic AV
Updated over a week ago

What Are You Looking For?


With all the features of the MP5 base model plus some additional perks including a search feature accessible when connected to an Apple product or USB drive, the MP5+ Stereo is an industry leader in watertight audio solutions. With a color LCD display to showcase songs, artists, and even album artwork, not to mention Sirius XM capabilities, this multi-environment stereo is designed for both adventure and relaxation. For the water-loving audiophile, the MP5+ stereo is an excellent choice to enhance any outdoor or indoor experience.


  • Bluetooth / MP3 / USB / AUX Stream music from your favorite device with support for Bluetooth Audio, MP3, USB, and AUX input.

  • AM/FM Radio Enjoy AM/FM listening wherever you go and save your favorite stations with 18 FM and 12 AM presets available. Compatible with both US and European frequencies.

  • SiriusXM Ready This stereo is ready to access over 170 Sirius XM radio stations. This feature requires a SiriusXM-Connect Vehicle Tuner and subscription (sold separately).

  • USB Charging Recharge your USB devices anytime, anywhere with 2Amps charging speed.

  • 288 Watt Amplifier Power up to 8 speakers or a combination of speakers and subwoofers thanks to a powerful 288W amplifier. Class A/B amplifier, 2 Ohm stable.

  • 3″ Color LCD Display An optically bonded, tempered glass screen allows users to view track information on a 3″ color LCD display. Album artwork is available when paired via Bluetooth with Apple devices.

  • 12V Triggers Built-In Control up to two external devices from the stereo or remote control, including amplifiers and deck or spot lighting directly.

  • Variable Brightness Display brightness varies from 100% in normal operation to 30% in dim lighting for optimum viewing day or night, rain or shine.

  • Multi-Environment Protection This device is fully waterproof (rated IP55) and UV/salt/fog resistant to ensure reliable performance even in the toughest conditions.

  • 2 Year Warranty This product comes with a two year warranty that can be extended with product registration online or via the Aquatic AV App.

What's in the Box?

  • MP5+ Stereo Media Player (AQ-MP-5UBT-S)

  • Faceplate Dust Cover

  • AQ-USB-1 USB Input Socket

  • 12-pin Wiring Harness (AQ-UNH-2)

  • DIN Cage and mounting screws

  • User/Installation Manual

Environment Install Instruction

  • Install on boat (with ignition): yellow wire (+12 V DC), red wire (switch), black wire (ground).

  • Install on spa / home (no ignition): join the yellow and red wire together like "Y" and put it in +12 V DC. Black wire (ground).

  • Power supply, if needed, must be 12 V DC and 5 A. Available for purchase on our web store.

  • Dimensions for the mounting hole: see the face plate dimensions.

Frequently Asked Questions

Q1. How do I adjust my Day/Night mode ?

To switch between Day and Night modes:

1. Press the MENU button to enter the SYSTEM menu.
2. Use the Rotary Knob to locate and enter the THEME option.
3. Use the Rotary Knob to toggle between Day/Night mode.
4. Short press the Rotary Knob to confirm the changes.

Note: The clock display will always be Night mode regardless of the Day/Night mode.

Q2. Which wiring harness can I utilize to connect to the MP5+ Stereo ?

The harness used for this particular stereo is the AQ-UNH-2.

Q3. Which Sirius XM Tuner is compatible with my stereo?

The SXV300V1 and SXV300V2 are compatible Sirius XM tuners for your stereo.

Q4. Can I install the marine model stereo into my Harley Davidson motorcycle ?

The marine stereo has a different connector than our Harley line. Also, if you were to install it in your motorcycle you would not be able to utilize the handlebar controls, so it's important to select the correct model for your needs.

Q5. How do I change the time on the clock or turn the clock ON/OFF?

From the clock settings menu, you can adjust the time or switch the clock to ON or OFF.

To change the time:

  1. Press MENU.

  2. Use the Rotary Knob to navigate to SYSTEM settings, then to CLOCK SETTINGS.

  3. Use the Rotary Knob to adjust and set the time.

  4. Short press the Rotary Knob to confirm the changes.

To switch the clock ON or OFF:

  1. Press MENU.

  2. Use the Rotary Knob to navigate to SYSTEM settings, then CLOCK PRIORITY.

  3. Use the Rotary Knob to select either ON or OFF by short pressing the Rotary Knob to confirm the change.

Q6. Does it have an internal amplifier?

Yes; the internal amplifier will give you a max of 288 W [power (max): 4x 45W (4 Ohms), 4x 72W (2 Ohms)]. The internal amplifier is powered on by default. Turning off the internal amplifier could result in lost or poor sound quality. The stereo works very well with both the external amplifier and internal amplifier powered on.



AQ-MP-5UBT-S and MP521


SiriusXM Ready Marine Stereo with Bluetooth and USB

Supported Media:

SiriusXM, Bluetooth (iAP), USB, iPhone, iPod, MP3, FM/AM radio, AUX

Device Charging:

via USB


3″ colour screen with album artwork display

Detachable Faceplate:


Dual Zone/Dual Source:





1x USB, 1x 3.5mm jack, 1x stereo pair RCA Aux, Bluetooth


2x stereo pair RCA (4V), 1x RCA sub-out, 1x rear USB

SiriusXM Ready:


FM/AM Tuner:

18x FM & 12x AM pre-set memory, switchable US/Euro frequencies

Amplifier Type:

Class A/B (2 Ohm stable)

Power (max):

4x 45W (4 Ohms) / 4x 72W (2 Ohms)

Frequency Response:

20Hz – 20kHz

Operation Voltage:

9.6V – 14.4V DC

Current Draw:

7A (max) / <6mA (standby)


Yes – IP55

Conformal PCB Coating:


Fascia Material:


Chassis Material:

ZAM coated



UV Protection:

500hrs stable

Salt/Fog Protection:

500hrs stable


Wired remote AQ-WR-5F (sold separately)

AQ-USB-1 Surface Mount USB Socket (included)

Dummy Faceplate/Dust Cover (included)

Additional Features:

Clock display mode

Display Dimmer High/Low

Display Day/Night Mode

Rear USB Charging

Removable Faceplate

2x External Triggers (12V DC, 350mA)

DSP EQ, Bass/Treble, Balance/Fader, Loudness

Stainless Steel mounting hardware

Search feature when connected to an Apple product or USB flash drive


Owner's Manual

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