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MB Quart NA360.4

360W 4-Channel Nautical Series Class SQ Marine Amplifier

MB Quart
Shop all MB Quart
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• 60W x 4-Chan. @ 4 ohms
• 90W x 4-Chan. @ 2 ohms
• 180W x 2 Chan. @ 4 ohms
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• 3-Way Protection Circuitry

Learn more about the na3604

We apologize

This item has been discontinued

Description


MB Quart brand icon

Authorized dealer

General Features:

  • Nautical Series 4-Channel Class SQ Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 60 watts x 4 chan.
    • 2 ohms: 90 watts x 4 chan.
    • Bridged, 4 ohms: 180 watts x 2 chan.
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +9 dB bass boost at 45 Hz)
  • Soft start turn-on
  • 4/3/2 or Mono channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink
  • Input sensitivity:
    • Level: 200mV-6V
  • Variable high-pass filter (250-4000 Hz)
  • Variable low-pass filter (40-250 Hz)
  • 4 gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
  • Dimensions: 9-1/2"W x 13-11/16"L x 2-1/4"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
60 watts x 4 channel
RMS Power @ 2 ohms
90 watts x 4 channel
Bridged RMS Power
180 watts x 2 channel
Amplifier Specifications
Amplifier Class
SQ
Number of Channels
4-Channel
Total RMS Power Output
360 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
0.05%
Speaker Level Inputs
No
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
High-Pass Crossover Frequency
250 - 4000 Hz
Low-Pass Crossover Frequency
40 - 250 Hz
Signal-to-Noise Ratio
93 dB
Channel Separation
80 dB
Bass Boost
0 - 9 dB
Remote bass/level controller
No
Fuse Rating
25A x 2 
Total Fuse Rating
50
Strappable
No
Sonic Certified Amplifier
Not Tested
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
What is in the box?
Paperwork
User manual
WITB: Amplifiers
Amplifier
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

NA360.4

Weight:

9.00lbs

Internal SKU:

na3604

Internal Product ID:

69263

Customer Ratings & Reviews



5 star
38%
4 star
50%
3 star
13%
2 star
0%
1 star
0%



Durability
3.9
Value
4.8
Features
4.4
Design
4.5
Usability
4.3

Customer Reviews

Sort by:

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Sweet but a little big

Overall I am very pleased with this amp and for the price it is a great buy. The amp is extremely attractive which is good because it will likely be seen. I state this as a side note really but the amp is the size of a good sized monoblock so be prepared as far as mounting locations. I have been spoiled by the size of my previous massive amps also from sonic. As always shipping and service were top notch.

By Bass head on July 13, 2014

58

found this helpful.

Great amp. Great price.

I bought this amp to replace a wetsounds ht2 on my SxS that had stopped working. I'll admit, I was a little nervous about purchasing this amp. Once I got it installed, and turned it on, WOW! 1/4 the price of the wetsounds amp, with a louder, and crisper sound than the wetsounds amp. I've been on one ride with it already, and it never missed a beat. I have it pushing two wetsounds icon 8's. Great amp!

By Mike on December 29, 2014

52

found this helpful.

Great value

Really easy to install, great sound for the buck. I'd definitely recommend.

By Marine guy on September 23, 2013

45

found this helpful.

MB Quart NA360

Had the NAU260 in my last boat without problems so this was a no brainer. Installed with no problems except that the main power leads are kind of flimsy considering you have to screw 4 gage wires to them. Also, the 260 manual gave instructions on how to set the voltage whereas the new one didn't or I missed it.

Still, the best for the money!

By Buzz on September 22, 2013

41

found this helpful.

Amp

Very good selection. The manual says to use 4 gauge wire for power and ground but I would recommend 8 gauge due to the amount of room on the mount. The sound is very crisp with clean power. Note the dimensions and make sure you have enough room becuase this amp is a little on the bigger size... I would recommenD it to anyone and the price is great

By Big d on September 20, 2015

7

found this helpful.

Decent amp

Wish they were as good as MB used to be, but still a decent starter amp. Put them in my son's first setup

By Josh on January 24, 2021

1

found this helpful.

Not bad for the price

Good amp for price but terminals are kinda crappy the ground terminal broke off during install

By Jason on May 13, 2016

mb quart na360.4

good product
easy user install
perfect delivery

great sound up and working same day

By roger on February 8, 2016

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