Search  for anything...

MB Quart NA2-320.4 Compact Four Channel, 320 watt Powersports Amplifier, Black

Based on 126 reviews
Condition: New
Checking for the best price...
$220.00
Holiday Deal · 31% off was $319.99

Buy Now, Pay Later


As low as $36.67 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 8 left in stock, order soon!
Fulfilled by SonicElectronix-com

Arrives Sunday, Nov 15
Order within 13 hours and 51 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

At a glance

Condition
New
Model
NA23204
Dimensions
2 x 4 x 6 in
Weight
16 oz
Material
plastic or composite
Voltage
9 volts
Maximum Supply Voltage
0.9 V DC
In the box
-JU711
Warranty
Manufacturer

Features 4

  • Product Type: Car Audio Or Theater
  • Package Dimensions: 8.6 L X 18 W X 24.1 H (Centimeters)
  • Package Weight: 1.225 Kilograms
  • Country Of Origin: China

Description

'MB Quart compact Two Channel, 400 watt Powersports amplifier with on-board equalization and simple instalation with quick release connectors. Specifications CLASS Full Range Class D VARIABLE VOLTAGE 0.2V~9V SIGNAL TO NOISE RATIO>90dB FREQUENCY RESPONSE 20Hz-20kHz CROSSOVER TYPE N/A CROSSOVER FREQUENCY RANGE CH1 & CH2 Switched HP/ Full CROSSOVER FREQUENCY RANGE CH3 & CH4 Switched HP/ Full BASS BOOST 0-12dB@45Hz SUBSONIC FILTER N/A POWER @ 2-OHMS 4 x 80W POWER @ 4-OHMS 4 x 40W TOTAL CHANNELS 4 AUDIO INPUTS RCA POWER TERMINAL 12V/GND Molex 10 ga SPEAKER TERMINAL WIRE GAUGE Molex Plug Connector FUSING 1 x 30 Amps CERTIFICATIONS Marine & Powersports DIMENSIONS 3.70 X 5.51 X 1.77 in 9.4 X 14.0 X 4.5 cm WEIGHT 2.16 lbs (0.98 kg)'

Specs 21

Item dimensions L x W x H 2 x 4 x 6 inches
Voltage 9 volts
Manufacturer MB Quart
Maximum Supply Voltage 0.9 V DC
Mounting Type Surface Mount
Number of Channels 4
Output Power 320 watts
Package Type Name Box

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Worth the $
Awesome little amp, installed on my Harley pushing 4-5.25 Polk Audios.
Reviewed in the United States on April 9, 2023 by Jim King

Fits my 2023 road glide perfectly
In car or bike description it shows it will not fit my 2023 HD road glide. But it does fit with lots more room. This MB Quart Marine Powersports Nautic 4 Channel 320 Watt Maximum Power Full Range Class D Amplifier with PWM MOSFET Power, Black. Works great! I have no problems with it at all.
Reviewed in the United States on February 21, 2025 by Robert apolinar

Not too bad good quality
Good sound and quality installed it on my Harley Davidson I will recommend this
Reviewed in the United States on October 19, 2022 by David .

Powerful
Works great lots of out put
Reviewed in the United States on November 5, 2024 by Keiron Albert

Good little amp
Used this in a classic truck with a Bluetooth controller. Worked well, lots of power for what it is. Doesn't say its bridgeable although I tried it and it worked and didnt overheat or anything but that was just to see if it would. Ended up putting a small sub and running 3/4 channels to it. Heres where it would have received 5 stars!!! IF it had a low pass filter! It has a high pass or pass-through on both 1/2 & 3/4 channels but no low pass. If it had a low pass option it would be the perfect little amp imo. ... show more
Reviewed in the United States on July 8, 2023 by DON

Good little amp
Great product so far, no frills amplifier, line in only, no speaker level inputs. Fit my build and space perfectly.
Reviewed in the United States on November 22, 2020 by kevin

Great Audio Quality
Nothing to complain about at all.
Reviewed in the United States on April 10, 2024 by Michael B.

Good value
Works well
Reviewed in the United States on November 12, 2024 by Ricky cress
Checking for best price...