Description
Included in this kit
This bundle includes a MB Quart MBQJ-AMP-ACC-1 - LOC Kit Includes LOC, Amp bracket and Harness, Compatible with 2018-2025+ Jeep JL and JT, a MB Quart MBQJT-SUBA-1 400 Watt Two Underseat Subwoofer System Upgrade Compatible With Gladiator 2020+, a MB Quart MBQJ-48CRGB24+ - Jeep JL/JT 2024-Current Rear Soundbar with Four 8" Speakers and RGB, a MB Quart MRGB-APP2 - Addressable RGB LED Controller with Bluetooth App Control for Custom Color, Brightness, Speed, and Music Sync Lighting, and a MB Quart NA4-400.2 Nautic 400 Watt Waterproof 2-Channel Amplifier 100x2 @ 4OHM, 200x2 @ 2OHM.
1x MB Quart MBQJ-AMP-ACC-1 - LOC Kit Includes LOC, Amp bracket and Harness, Compatible with 2018-2025+ Jeep JL and JT (MBQJ-AMP-ACC-1)
MBQJ-AMP-ACC-1 Jeep Wrangler JL / Gladiator JT Line Output Converter Kit
The MB Quart MBQJ-AMP-ACC-1 is a vehicle specific line output converter kit designed to add one or more amplifiers to the factory audio system in Jeep Wrangler JL and Gladiator JT models. Built to support subwoofer and soundbar amplifier upgrades, it combines model specific harnessing, a 4 channel LOC, and amplifier mounting support in one package.
Overview
Factory Audio Integration for Jeep Amplifier Upgrades
The MBQJ-AMP-ACC-1 is built to tap into the OEM Jeep audio system and simplify the process of adding aftermarket amplifiers for a subwoofer and or soundbar. Rather than piecing together separate integration parts, this kit combines the main signal conversion and harnessing pieces needed for a cleaner install path.
MB Quart also includes application specific harnessing for different Jeep model year groups, along with a power harness that works directly with MB Quart NA2 and NA4 amplifiers.
Feature Highlights
What the MBQJ-AMP-ACC-1 Adds to a Build
Fitment and Harnessing
Coverage for JL and JT Applications
The kit is listed for Jeep Wrangler JL 2018 current and Jeep Gladiator JT 2020 current. Included signal harnesses cover both 2018 to 2023 and 2024 current applications, helping maintain compatibility across the stated vehicle range.
Installation Support
Mounting and Expansion in One Package
In addition to the LOC and harnessing, the MBQJ-AMP-ACC-1 includes a powder coated amplifier mount and a plug and play power harness for up to three MB Quart NA2 or NA4 amplifiers, giving the kit a more complete system building role than a basic signal adapter alone.
| Model | MB Quart MBQJ-AMP-ACC-1 |
| Type | Vehicle kit |
| Series | Jeep Gladiator Tuned, Jeep Wrangler Tuned |
| Category | Mobile |
| Condition | New |
| Color | Black |
| Warranty | 1 year |
| Compatible Vehicles | Jeep Wrangler JL 2018 current, Jeep Gladiator JT 2020 current |
| Signal Harnesses | Included for 2018 to 2023 and 2024 current model years |
| Power Harness | Plug and play with up to 3 MB Quart NA2 or NA4 amplifiers |
| Included LOC | 4 channel line output converter |
| Amplifier Mount | Powder coated mount for up to 3 MB Quart NA2 or NA4 amplifiers |
| Install Note | Basic hand tools |
1x MB Quart MBQJT-SUBA-1 400 Watt Two Underseat Subwoofer System Upgrade Compatible With Gladiator 2020+ (MBQJT-SUBA-1)
Dual 8” Sub Enclosure + NA2-400.1 400 watt mono amplifier
TYPE
Vehicle Kit
COLOR
Black
VEHICLE KIT TOTAL SYSTEM POWER (WATTS)
400
SUBWOOFER
Two 8 Inch 8 Ohm Subwoofers: Application specific long-throw design.
SUBWOOFER MOUNTING
Rear Underseat Subwoofer Enclosure: High quality HDPE construction with molded in center support structure, 1.0 cubic feet of internal airspace.
SUBWOOFER AMPLIFIER
400 Watt High Efficiency, Class D Amplifier: Big power, small chassis design with low current draw.
SUBWOOFER AMPLIFIER MOUNTING
Mounts to amp plate included with MBQJ-STG6A-1 and MBQJ-STG6AH-1.
HARNESSING
Full system harness
COMPATIBLE VEHICLE FITMENT
Compatible with Jeep® Wrangler (JL) 2018: Current with aftermarket radio, Compatible with Jeep® Gladiator (JT) 2020: Current with aftermarket radio
AMPLIFIER FEATURES
400 watt high efficiency Class-D compact NA2 amplifiers with on-board equalization
SUBWOOFER FEATURES
Two 8 inch application specific long-throw subwoofers: Frequency Response - 50Hz to 250Hz, Sensitivity - 89db, Impedance - 4 Ohm
MOUNT / HARNESS
Easy Installation Uses OEM hardware. Full access to jack and top parts. No modification to floormats required.
TIME AND TOOLS
Basic hand tools
1x MB Quart MBQJ-48CRGB24+ - Jeep JL/JT 2024-Current Rear Soundbar with Four 8" Speakers and RGB (MBQJ-48CRGB24+)
MB Quart MBQJ-48CRGB24+ Jeep® Wrangler (JL) 2024-Current / Gladiator (JT) 2024-Current rear overhead soundbar with four 8 inch coaxial speakers, enclosure, and addressable RGB LED lighting is designed to directly replace/upgrade the OEM rear speaker sound bar.
Fitment: Jeep® Wrangler (JL) 2024-Current, Jeep® Gladiator (JT) 2024-Current.
Features: rear speakers: Four 8 inch coaxial speakers. 1 inch PEI dome tweeters. Light weight composite frame design for maximum airspace. Durable composite polypropylene cone with temperature stable Butyl rubber surround; harnessing: Vehicle Specific Wiring and Harness; Simple “no mistakes” plug and play OEM style installation when paired with the MB Quart MBQJ-STG4A-1 or MBQJ-STG4AH-1 Audio Systems.; accessories: Integrated addressable RGB lights that shine bright and have great consistently..
Install/components: mount/harness: Simple “no mistakes” plug and play OEM style installation.; time/tools: Basic hand tools.; rear speaker mounting: The speaker enclosure is a composite construction with integrated MB Quart logo badge. It's a drop in upgrade utilizing the roof area around the b-pillar.; additional details: See Kit Inclusions and Features & Benefits for product components and details..
Details: UPC: 806576238270; type: Vehicle Kit; series: Jeep Wrangler Tuned, Jeep Gladiator Tuned; category: Mobile; color: Black; warranty: 1 Year; shipping weight 26.7 lbs; shipping dimensions 47.38 x 20.50 x 8.38 in.
1x MB Quart MRGB-APP2 - Addressable RGB LED Controller with Bluetooth App Control for Custom Color, Brightness, Speed, and Music Sync Lighting (MRGB-APP2)
MRGB-APP2 Addressable RGB LED Controller
The MB Quart MRGB-APP2 is a Bluetooth controlled addressable RGB LED controller designed for users who want more direct control over compatible lighting systems through a smartphone app. Built specifically for addressable RGB LED lighting, it allows adjustment of color, brightness, speed, and lighting modes while also supporting music sound control effects through app based operation.
Overview
Smartphone Control for Addressable RGB Lighting
The MRGB-APP2 is built to provide app based control for compatible addressable RGB LED lighting systems. MB Quart describes it as a controller for addressable RGB only, allowing users to manage lighting behavior from a smartphone rather than relying on a basic inline controller.
Through Bluetooth connectivity and smartphone app support, the controller is designed to provide access to custom color settings, brightness adjustment, speed changes, and both static and dynamic lighting modes across marine, mobile, and powersports applications.
Feature Highlights
What the MRGB-APP2 Adds to a Lighting System
Compatibility
Built for Addressable RGB and Smartphone App Use
The MRGB-APP2 is listed as compatible only with addressable RGB LED lighting and a smartphone using the Apple App Store or Google Play Store. This makes it a dedicated solution for installations centered around app controlled addressable lighting behavior.
Installation
Compact Design for Easier Mounting
MB Quart describes the controller as a universal installation product with a compact design that allows easier installation and more flexibility when choosing a mounting location.
| Model | MB Quart MRGB-APP2 |
| Type | Lighting control |
| Series | MRGB |
| Category | Marine, Mobile, Powersports |
| Condition | New |
| Color | White |
| Warranty | 1 year |
| Fitment | Universal |
| Lighting Compatibility | Only addressable RGB LED lighting |
| App Compatibility | Smartphone with Apple App Store or Google Play Store |
| Control Method | Bluetooth and smartphone app |
| Lighting Functions | Color, brightness, speed, static and dynamic modes, music sound control effects |
| Operating Voltage | DC 5 to 24 volt |
| Working Current | 25 mA to 120 mA |
| Working Temperature | 14 to 104 degrees F |
| Dimensions | 4 inch x 1.75 inch x 0.875 inch |
| Install Note | Universal installation with compact design for easier mounting |
1x MB Quart NA4-400.2 Nautic 400 Watt Waterproof 2-Channel Amplifier 100x2 @ 4OHM, 200x2 @ 2OHM (NA4-400.2)
Overview
The MB Quart NA4-400.2 Nautic is a compact 2-channel powersports and marine amplifier engineered for high performance in harsh environments. With a total output of 400 watts and a highly efficient Class D design, it delivers strong, reliable power while maintaining a compact footprint.
Built with waterproof potted internals and IP67-rated protection, this amplifier is designed to withstand exposure to water, dust, and extreme conditions without compromising performance.
Key Features
- 400W max 2-channel amplifier for marine and powersports applications
- IP67 waterproof and dustproof design with fully potted internal components
- Q-Stasis low-noise preamp circuit for improved signal clarity
- Quick-connect power, speaker, and RCA connections for faster installation
- Integrated protection circuitry with LED diagnostic indicators
Engineering & Protection
The Nautic series amplifier features fully potted internals that seal and protect sensitive electronics from moisture, vibration, and environmental exposure. Combined with an IP67 rating, it meets the demands of marine and off-road environments.
A PWM MOSFET power supply and aluminum heatsink design ensure stable output with efficient heat dissipation, allowing the amplifier to perform consistently under load.
Audio Performance & Tuning
Equipped with a Q-Stasis low-noise preamplifier circuit, the NA4-400.2 minimizes incoming signal noise to deliver cleaner audio output. Variable high-pass and low-pass crossovers provide flexible system tuning for a wide range of speaker configurations.
With a wide frequency response and strong signal-to-noise performance, this amplifier supports detailed, full-range sound reproduction in demanding environments.
Installation & Connectivity
Designed for ease of installation, the amplifier features quick-connect power and signal terminals along with corrosion-resistant nickel-plated connections. The compact chassis allows for flexible mounting in tight spaces common to marine and powersports applications.
Specifications
| Model | NA4-400.2 |
|---|---|
| Channels | 2 |
| Amplifier Class | Class D (Full Range) |
| Max Power | 400W |
| Power @ 4 Ohms | 2 x 100W |
| Power @ 2 Ohms | 2 x 200W |
| Frequency Response | 6Hz – 29kHz |
| Signal to Noise Ratio | >105 dB |
| Total Harmonic Distortion | 1.0% |
| High Pass Crossover | 15Hz – 300Hz (12 dB/Octave) |
| Low Pass Crossover | 50Hz – 300Hz (12 dB/Octave) |
| Input Sensitivity | 0.2V – 9V |
| IP Rating | IP67 |
| Fuse Rating | 30A x 1 |