Polk 2-Pc. Modular Waterproof AM/FM/WB/USB/SXM/AUX/PA/BT Stereo with App Control

Product #: UM1ARTL

The UM1A has a maximum power of 200 watts which delivers state-of-the-art sound with the click of a button. A 4-volt output has been incorporated into the stereo, as an advantage over a 2-volt output. The unit has a two-piece modular design that includes a waterproof commander module as well as a hideaway module. It also features full-function app control technology, via the free downloadable Polk Ultramarine app, allowing users to control all of the primary functions of their stereo directly through their mobile device.


Visit your iTunes or Google Play store to download the Ultramarine app.

Price: $639.99
Price: $639.99
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Polk 2-Pc. Modular Waterproof AM/FM/WB/USB/SXM/AUX/PA/BT Stereo with App Control

Polk 2-Pc. Modular Waterproof AM/FM/WB/USB/SXM/AUX/PA/BT Stereo with App Control

  • Features
  • Specs
  • Testing
  • Reviews
  • FAQ
  • Media

Features for the Polk 2-Pc. Modular Waterproof AM/FM/WB/USB/SXM/AUX/PA/BT Stereo with App Control

  • Low-profile flush-mount design with panel an U-bracket fastening option
  • Detachable chrome trim ring for front mounting
  • Rotary encoder for volume control and menu-driven user interface
  • Dot Matrix LCD with White color backlight readable in direct sunlight
  • 2-Wire power system: 12V DC (Ground and 12V power switched)
  • Non-volatile memory: For station presets, audio and user settings
  • Electronic AM/FM Tuner (US/Euro selectable) RBDS w/PTY search
  • Station presets: 18 FM, 12 AM, 18 SAT
  • NOAA 7-channel weatherband
  • Bluetooth (A2DP streaming audio ; AVRCP remote control)
  • iPod/iPhone Ready (via. USB)
  • App Ready (Ultramarine)
  • USB1 / USB2 (USB 2.0, MP3/WMA, iPod/iPhone, 1A charging)
  • SiriusXM Ready (SXV200 tuner)
  • Bass/ mid/ treble tone controls with EQ presets
  • Front/ rear and sub channel RCA pre-amp outputs
  • Aux1 and aux2 auxiliary audio RCA inputs
  • Water resistant front panel commander: IPx6 / tuner-amp chassis: IPx5
  • Waterproof locking Deutsch power/ speaker connector
  • PA (Public Address)
  • JDAB wired remote ready (PRC100BC/ PRC200BC)
  • Low battery warning: audible /visual warning @ <10.8V
  • Connects to UMZC4 for added zone controls. (Uses 8 pin JDAB interface)
  • Conformal coated PCB
  • UV Resistant: ASTMD4329 compliant
  • Corrosion resistant material/ finishing ASTMB117 compliant
  • Includes silicone rubber front panel protective cover

Specifications for the Polk 2-Pc. Modular Waterproof AM/FM/WB/USB/SXM/AUX/PA/BT Stereo with App Control

Weight (Lbs)
Overall Dimensions
Maximum Power Output (Watts x Channel)
50 x 4
Signal-to-Noise Ratio @ 1Watt/4 Ohms (dB)
Mounting Hole Dimensions (Inches WxH)
7.59" x 7.27"
App Ready
Mounting Depth (Inches)
Watertight Standard Compliant
Conformal Coated PCB
Plastic PCB Insulator
iPod Ready
SiriusXM Satellite Radio Ready
Wired Remote Control Ready
Wireless Remote Control Ready
Positive LCD Display
MP3/WMA Playback
AM/FM Tuner
Selectable AM/FM Frequency Spacing US/European
USB Input
Auxiliary Audio Input
Preamp Line Level Outputs
Electronic Disc Skip Protection (Seconds)
Radio Broadcast Data System Text Display
Non-Volatile Memory for Presets & User Settings 2-Wire Power (Access ACC, GND)
NOAA Weatherband/Weather Alert
ASTM B117 Salt Spray Exposure Standard Compliant
ASTM D4329 UV Exposure Standard Compliant


Our hands on Engineering Research and Development team builds quality into our JENSEN Marine products from the beginning by expertly designing each product from the ground up and validating all designs through extensive testing that is primarily conducted in our own on-site test lab. Therefore, JENSEN Marine Audio & Video products offer MORE durability and performance than you would expect from standard electronics.

Temperature/Vibration Chamber

Long duration product exposure to constant random frequency operational vibration and non-operational vibration to simulate rugged road conditions.  Simultaneous temperature cycle and vibration exposure are also conducted for additional data that is relevant to detecting potential material/component weaknesses and calculating product life expectancy.






Electrostatic Discharge

The last thing you need is for your radio to quit due to accidental static shock. That’s why our products go through the extensive Electrostatic Discharge Test on all exposed control areas as well as I/O connections so they can withstand the most severe static build up. Shocking, isn’t it?


Load Dump

Severe electrical environments are relatively common mobile applications. We understand these environments and what it takes to protect electronics that will be exposed to them. That’s why all of our products include specific and significant front-end circuit protection and filtering that is proven to withstand the toughest electrical environments. The Load Dump Tests puts destructive pulses (spikes) to simulate the sudden disconnection of the battery from the alternator while the alternator is generating current to load the battery. Such Load Dump pulses are high energy pulses with a high potential of destruction ensuring that our electronics are protected.

DC Voltage Overstress

Uses a power supply, applies 18 VDC for 5 minutes. For Heavy Duty products:  Applies 24 VDC for 5 minutes to simulate a vehicle that is jumpstarted.

Reverse Polarity

The Reverse Polarity test uses a car battery to test the durability of the product when the (+) and (–) cables are accidentally reversed.


Power Line Noise Rejection

Test throws noise onto the signal and simulates product reaction to alternator whine.

Simulated Crank Start Voltage

Used to test electronics depreciation and altercations when vehicle is turned on.

High/Low Operating Voltage Test

Both tests used to ensure electronics consistency when vehicle battery goes below or above the normal 12V.  Product must remain operational throughout the test.

Shorted I/O

Ensures that product will function when inputs and outputs are connected improperly to the product.



High/Low Operating Temperature

Long-Duration product exposure to operational temperature extremes and rapid temperature cycles that are experienced in outdoor mobile applications. In addition, we test for High humidity introduced at high-temp to test the effectiveness of circuit corrosion protection (conformal coating).


High/Low Storage Temperature

Ensures our products will perform even after prolonged periods of storage with no power in extreme hot or cold temperatures.


Temperature Cycle

Used to ensure powered components withstand temperature fluctuations.

High-Pressure Spray

Subjects externally mounted products to high-pressure water by blasting the product with 1,300 psi at 6 inches.

voyager camera test


Pushbutton/Hinge/Mechanism Durability Cycle

RF Performance Testing

RF performance is central to the user experience for many of our products. The RF Performance test ensures that our products keep clean signals in and the bad signals out, so that users are always left with a steady signal without outside interference. We not only test for high level RF performance during product design, but we also take a random sampling from each production lot and test it to ensure performance consistency. A battery of over 80 performance tests are conducted to analyze and validate RF and audio performance.


Inductive Load Switching

Tests product well above and below the average waveform to ensure that it can withstand the extreme fluctuations.

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Learn how to pair your Polk® Ultramarine UM1 stereo to your preferred mobile device.