No. The terminals and cooling vents are not waterproof. What makes these amplifiers preferable for recreational vehicles is that they have pigtail connections versus exposed wore terminals offering some protection to liquid splashes, but by no means waterproof.

Does this amp have speaker (high) level inputs?

No. RCA inputs only. You will need a LOC to convert to low level outputs.

I have a 2018 polaris with ride command, will this amp connect to the ride command head unit?

Not sure better check with Polaris

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MB Quart NA2-400.1 Compact 400 watt Mono Powersports Amplifier to for a subwoofer

Product ID: 389186923

Details

Manufacturer
MB Quart
Maximum supply voltage
9 Volts
Minimum supply voltage
0.2 Volts
Mounting type
Surface Mount
Voltage
9 Volts

⚡400W peak power output

🔌Quick-release Molex connectors

🎚️On-board bass boost & crossover

Description

🎯 Unleash deep bass power anywhere — compact, tough, and trail-ready!

RUGGED RELIABLE - Marine-grade aluminum housing with IPX5 certification ensures durability against water and dust on any adventure.
COMPACT POWERHOUSE - Delivers up to 500W at 2 ohms in a sleek, space-saving design perfect for tight powersports setups.
PRECISION BASS CONTROL - Integrated bass boost and electronic crossover let you tailor deep, punchy lows exactly how you want them.
REMOTE BASS ADJUSTMENT - Included bass remote lets you dial in your subwoofer’s impact on the fly without leaving the driver’s seat.
EFFORTLESS INSTALLATION - Quick-release Molex connectors and surface mount design make setup fast and hassle-free—get trail-ready in minutes.

The MB Quart NA2-400.1 is a compact, 400-watt mono amplifier designed specifically for powersports subwoofers. Featuring Class D efficiency, on-board equalization with bass boost, and quick-release Molex connectors, it offers powerful, customizable bass in a rugged, marine-certified aluminum chassis. Its small footprint and included remote make it ideal for off-road vehicles, delivering clean, punchy low frequencies with easy installation and reliable performance.

Specifications

ASIN	B06VT7XSYC
Brand Name	MB Quart
Customer Reviews	4.5 4.5 out of 5 stars (114)
Global Trade Identification Number	00806576227359
Included Components	Quick Start Guide
Item Weight	948 g
Manufacturer	MB Quart
Material Type	Aluminum
Maximum Output Power	400 watts
Maximum Supply Voltage	9 Volts
Minimum Supply Voltage	0.2 Volts
Model	NA2-400.1
Mounting Type	Surface Mount
Number of Channels	1
Number of Items	10
Number of Packs	1
Output Power	500 Watts
Package Type Name	box" or "envelope
Part Number	NA24001
Specification Met	Astm, Ipx5
UPC	806576227359
Unit Count	1.0 Count
Voltage	9 Volts

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