UT65B + NA2-400.2 Bundle
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Rockville
UT65B + NA2-400.2 Bundle
UT65B + NA2-400.2 Bundle
6.5" IPX6 Rollbar Speakers, 2-Channel Marine Amp, Mounts
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Regular price
$229.90
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$229.90
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Features
- Full-range 2-channel marine amplifier
- IPX6 speakers for trail and surf
- Swivel mounts fit 1.5"–2" bars
- Two-way crossover for balanced sound
- Gold-plated, corrosion-resistant connections
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What's Included in the box
- UT65B 6.5" Rollbar Speaker Pair
- MB Quart NA2-400.2 2-Channel Amplifier
- Swivel Mounting Brackets (1.5"–2")
- Installation Hardware
SKU: SKU: UT65B+NA2-400.2
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Product Description
Streamlined and stout, this two-channel system pairs IPX6 6.5" tower speakers with a compact marine amp for clear, confident audio. The full-range Class D topology keeps heat low and output high, while sealed enclosures and premium connections preserve performance in spray, dust, and sunlight.
This Bundle Includes

UT65B
The UT65B delivers 400W peak and robust sound in a water-resistant, shockproof design. With 360° swivel aluminum brackets, rustproof hardware, and UV protection, these speakers are engineered for marine, UTV, and ATV use—offering premium audio and rugged durability for any outdoor adventure.
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NA2-400.2
The MB Quart NA2 400.2 2-channel amplifier powers Polaris, ATV, UTV, RZR, and cart systems with full-range Class D performance. Marine-grade protection, Q-Stasis preamp circuitry, and ABYC/ASTM certification suit harsh environments. Switchable crossovers, gold-plated connections, and quick-disconnect wiring create a refined yet rugged power core for outdoor audio.
Features
Marine-Ready Muscle
Up to 2 x 200W @ 2Ω offers strong output for dynamic music with effortless control across open cabins.
Purpose-Built Speakers
Poly cones, 1.25" coils, and PEI tweeters deliver crisp detail and sturdy midbass that carries outdoors.
Weatherized Hardware
Gold-plated, corrosion-resistant terminals and sealed housings resist saltwater and grime.
Precision Mounting
360° aluminum brackets fit 1.5"–2" bars, providing clean lines and precise aiming.
Compact Install
Small amplifier footprint integrates easily under seats or panels for a tidy, modern cabin.

Technical Specifications
- Type UTV/ATV Marine Speaker + 2-Channel Amplifier
- Water Resistance Speakers IPX6; Amplifier Water Resistant
- Amp Power 2 x 200W @ 2Ω; 2 x 100W @ 4Ω
- Amplifier Topology Full-Range Class D
- Frequency Response Speakers 60Hz–20kHz; Amp 20Hz–20kHz
- Mount Compatibility 1.5", 1.75", 1.875", 2" Bars
- Color/Finish Black Enclosures, Aluminum Brackets
- Weight Amp 2.12 lb; Each Speaker ~4 lb
- Dimensions Speaker 9.84" x 7.17" x 7.32"; Amp 3.70" x 5.51" x 1.77"