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DS18’s MRX300 is the ultimate control center for ANY marine audio system.
Offering 3 independent audio zones with separate volume and tone controls, a 2-band EQ (Bass and Treble): the MRX300 lets you fine-tune your audio to your preferences.
With features like an AM/FM tuner with RDS Weather Alert Radio, 37 radio presets, including 18 FM, 12 AM, and 7 WB channels: you gain easy access to your preferred stations.
The 3" full-color TFT display provides a crystal-clear view of all your settings. Thanks to the Gorilla Glass and Wet Bonded screen, it's resistant to scratches and water damage. The MRX300 also comes with selectable wallpapers and day and night themes. The adjustable 7-color backlit buttons add a touch of customization to match your boat's aesthetic.
With 4 x 25W RMS power output at 2 ohms stable, the MRX300 delivers impressive sound quality. The 4.5V pre-amp output ensures clean signal when connecting external amplifiers or subwoofers.
In addition to Bluetooth V5.0 streaming; the MRX300 features a USB port for playback and charging: and up to 64GB of storage for MP3 and WMA files: giving you plenty of storage for all your favorite tracks. The AUX input, rearview camera input, and wired remote control input provide even more convenience.
Built to withstand the marine environment, the MRX300 has an IPX6 water-resistance rating and is UV and salt-resistant. Its universal round mounting hole makes installation a breeze.
Don't just settle for any marine head unit – prioritize performance with the MRX300
| SKU | MRX300 |
|---|---|
| Operating Voltage | 10.5 - 16 Volts |
| Low Voltage Warning Alert | YES (< 10.5V) |
| Waterproof Rating | IP65 |
| UV/Salt Protection | YES, B117 Salt Fog & D4329 UV Exposure Tested |
| Buttons | Rubber + RGB Backlit 7 Colors Selectable (Auto/White/Red/Blue/Green/Purple/Cyan/Yellow) |
| Screen Panel | Gorilla Glass with Wet Bonded Display |
| EEPROM | Yes (all settings are saved when power is disconnected) |
| Display Type | Thin Film Transistor (TFT) Display |
| Resolution | 640*360 pixel, IPS |
| RMS | 4 x 18W @ 4ohm, 4 x 25W @ 2ohm |
| Max | 4 x 50W @ 2ohm |
| Min Load | 2 ohm Stable per Channel |
| Frequency Response | 20Hz to 20Khz |
| RCA Pre-Out Voltage | 4.5 Volts |
| Output Impedance | 500ohm |
| Equalizer | 2 Bands (Bass 80Hz, Treble 12Khz) |
| Presets | YES (S-Bass/Vocal/Powerful/clarity) |
| Subwoofer Control | Level (0 to 40) |
| Audio Zones | 3 Zones (Stereo + Subwoofer each) |
| Independent Zone Control | YES (Level/Tone) |
| Audio Input | L+R RCA (Aux Input) |
| FM Frequency Range | 87.5 - 108 MHz |
| AM Frequency Range | 522 - 1620 KHz |
| Tuner Presets | 18 FM / 12 AM |
| Radio Data System | YES (AF/TA/NEWS) Selectable |
| Frequency Range | 174.928-239.200 MHz |
| Sensitivity | 93 dB |
| Stereo separation | 50 dB at 1 kHz |
| Signal/noise ratio(S/N) | 65 dB |
| Bluetooth Version | 5.0 + EDR |
| Audio Streaming | A2DP |
| USB Compatibility | v2.0 |
| USB Capacity | 64 Gb Max |
| USB Charge Capacity | 2.1Amp |
| Audio Files Compatibility | MP3, WMA |
| Remote Control | Wired 3.5mm Jack Input, (Compatible with MXRC) |
Most products ship directly from our vendor warehouses or distributor network. Shipping times can vary depending on the brand, product size, availability, and destination.
Large or oversized items such as lift kits, wheels, tires, bumpers, exhaust systems, and audio enclosures may require additional handling time or freight shipping.
If there is ever an issue with availability, shipping cost, or delivery timing, we will contact you before moving forward with the order.
Returns may be accepted on most new, unused, unopened items within 30 days of delivery. Items must be in original packaging and in resellable condition.
Installed, used, damaged, missing-parts, electrical, special-order, clearance, or custom-built items may not be eligible for return.
Return shipping is normally the customer’s responsibility unless the return is due to our mistake, such as the wrong item being shipped.
Before sending anything back, please contact Kaos Offroad so we can review the order and provide return instructions. Returns sent without approval may be refused.
Some products are vehicle-specific. Please verify fitment before ordering. If you are unsure, contact us with your year, make, model, sub-model, and any relevant details before purchasing.
Original shipping charges, freight charges, and vendor restocking fees may be non-refundable depending on the item and supplier policy.






