NA2-400.2RC Nautic 400 Watt Amplifier

MB Quart NA2-400.2RC NAUTIC 400 Watt Amplifier 2 Channel Powersports Amp for Polaris RIDE COMMAND source unit.

$ 179.99
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SKU: 806576230632 Categories: ,

MB Quart compact Two Channel, RIDE COMMAND compatible 400 watt Powersports amplifier with quick release connectors.

Weight 2.2 lbs
Dimensions 6.8 × 3.93 × 1.77 in



MB Quart




Marine, Powersports





UTV Source Available


UTV Source Link


1 Year

IPX Rating


Amp Class

Full Range Class D

Amp Total Channels


Amp Max Power (watts)


Amp Power @ 2 Ohms (ch x watts)

2 x 200

Amp Power @ 4 Ohms (ch x watts)

2 x 100

Amp Crossover


Amp Variable Low Pass Crossover 12dB per Octave

CH1 & CH2: 300Hz

Amp Bass Boost

0-12dB @ 45Hz

Amp Subsonic Filter


Amp Variable Voltage


Amp Signal to Noise

> 90dB

Amp Frequency Response


Amp Speaker Level Audio Inputs


Amp Power Terminal 12v/GND

Molex 10 GA

Amp Speaker Terminal Wire Gauge

Molex Plug Connector

Amp Fusing

30A x 1

Proposition 65 Notice ​WARNING: This product can expose you to chemicals including LEAD, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
Marine Grade Protection / IPX Rating

Amplifiers are ASTM certified which defines that marine amplifiers must use conformal coated PC boards to resist corrosion from salt spray & moisture. IPX5

Low Noise Preamplifier Circuit

The highly engineered Q-Stasis pre-amplifier stage reduces incoming noise from source units dramatically improving sound quality.

RCA Inputs

1 pair high temperature impact resistant nickel-plated RCA inputs with hex screw terminals that allow for secure connections and is erosion resistant.

Operation Mode

Flexible installation allows this amplifier to run in two channel or bridged mono mode.

Class / Topology

Full Range Class D: Highly efficient circuit topology which helps the amplifer develop a lot of power in a very small heatsink.

Output Device Technology

PWM MOSFET Power Supply: Stable power through the PC board with minimal heat generation.

Heat Sink

Aluminum: Quickly dissapates heat to allow the amplifer to run lower impedance for longer duration.

Power Supply

Simpatico Coil Design: The dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices.

Output Connections

Quick Disconnect Wires, RCA Connections: Quickly remove amplifer when you are putting machine up for the winter of as a security precaution.

Connection Type

Nickel-plated connections: Nickel plated corrosion resistant connections.

LED System Protection Circuitry Diagnostics

Three-stage protection circuits: Monitor thermal, overload, DC, and speaker short protection with lighted indicators on the amplifier end panel.

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MB Quart Nautic Amplifiers (NA2) Quick Start Guide (Rev3)