See all parts that fit your 2024 Explorer
320W Peak Class D Nautic Series 4 Channel Marine and Powersports Amplifier
• 40 watts x 4 channel @ 4 ohm
• 80 watts x 4 channel @ 2 ohm
• Total Power: 320 watts
• Class D 2 ohm Stable 4-Channel Amplifier
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers
$111.96
List price $159.99
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
List price $119.99
280W Peak (90W RMS) 6x9” SXE Series 2-way 4-ohm Coaxial Speakers
$56.99
List price $71.99
150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers
$79.95
List price $109.95
600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers
$49.99
List price $59.99
250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers
$319.00
List price $339.00
• 40 watts x 4 channel @ 4 ohm
• 80 watts x 4 channel @ 2 ohm
• Total Power: 320 watts
• Class D 2 ohm Stable 4-Channel Amplifier
The MB Quart NA2-320.4 is a compact, marine-grade Class D 4-channel amplifier designed for powerful, reliable performance in harsh environments. Built to IPX5 and ASTM standards with conformal-coated circuitry, corrosion-resistant terminals, and an aluminum heat sink, it’s engineered to withstand moisture, salt spray, and high temperatures. Features like Q-Stasis noise-reduction pre-amplification, 3-way protection circuitry, signal-sensing turn-on, and flexible four-channel or bridged mono operation provide clean, stable power and easy system integration. Compact and installation-friendly with quick-disconnect wiring, this amplifier is ideal for marine, powersports, or outdoor audio systems needing durability and clarity.
MB Quart NA2-320.4 owner's manual
|
(newest, current model)
|
|
(previous model, replaced by MB Quart NA2-320.4)
|
Best selling similar products
• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier
(41)
$209.99
List price $239.99
• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel Amplifier
(25)
$279.99
List price $335.99
• 80 watts x 4 channel + 350 watts x 1 channel @ 4 ohm
• 125 watts x 4 channel + 600 watts x 1 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm + 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 1100 watts
• Class D 2 ohm Stable 5-Channel Amplifier
(46)
$349.99
List price $419.99
• 800 watts x 1 channel @ 4 ohm
• 1350 watts x 1 channel @ 2 ohm
• 1700 watts x 1 channel @ 1 ohm
• Total RMS Power: 1700 watts
• Class D 1 ohm Stable Monoblock Amplifier
(36)
$259.99
List price $335.99
• 150 watts x 6 channel + 250 watts x 2 channels @ 4 ohm
• 225 watts x 6 channel + 400 watts x 2 channels @ 2 ohm
• Bridged: 450 watts x 3 channel + 850 watts x 1 channel @ 4 ohm
• Total RMS Power: 2200 watts
• Class D 2 ohm Stable 8-Channel Amplifier
(2)
$399.99
List price $539.99
• 420 watts x 1 channel @ 4 ohm
• 760 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier
(38)
$209.99
List price $227.99
• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
(70)
$279.99
List price $383.99
• 240 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier
(16)
$189.99
List price $239.99
• 40 watts x 4 channel @ 4 ohm
• 50 watts x 4 channel @ 2 ohm
• Bridged: 100 watts x 4 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier
$549.99
List price $659.99
Manufacturer:
Model Number:
NA2-320.4
Weight:
2.16lbs
Internal SKU:
na23204
Internal Product ID:
128343
| 5 star |
|
100% |
| 4 star |
|
0% |
| 3 star |
|
0% |
| 2 star |
|
0% |
| 1 star |
|
0% |
| Durability | ||
| Value | ||
| Features | ||
| Design | ||
| Usability |
Universal Remote Bass Level Control Knob
Flush Mount & Universal via RCA. Works with any amp, controls your bass output
(8)
$7.99
List price $14.99
Add a 4-channel amplifier without replacing your factory radio
(2)
$27.99
List price $31.24
Add a 4-channel amplifier without replacing your factory radio
(31)
$21.99
List price $23.74
NVX XIX45 X-Series RCA Interconnect Cable
16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology
(24)
$23.99
List price $28.99
NVX V-Series RCA Interconnect Cable
19 ft. of 4-Channel RCA cable with dual twisted-pair conductors
(35)
$15.99
List price $32.99
NVX XIV45 4-Channel RCA Audio Interconnect Cable
5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology
(27)
$16.99
List price $29.99
All-in-one cable for speaker and amp installation (20 feet)
(2)
$29.99
List price $47.99
75 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire
(22)
$34.99
List price $44.99
80 Amp Smart Relay Isolator (XSBI80)
Smart isolator - Monitors and auto-charging feature!
(2)
$24.99
List price $49.99
Great for isolating a second batter making it dedicated to the stereo system
(10)
$15.99
List price $19.99
200 Amp Smart Relay Isolator (XSBI200)
Smart isolator - Monitors and auto-charging feature!
(6)
$49.99
List price $79.99
200 Amp Relay Isolator (BIR200)
Great for isolating a second batter making it dedicated to the stereo system
(17)
$49.99
List price $59.99
500 Amp Relay Isolator (BIR500)
Does not create a voltage drop to the second battery like conventional isolators
(36)
$79.99
List price $95.99
True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block
(33)
$109.99
List price $131.99
1.0 Farad Capacitor with Digital Red Display for up to 1000W Max
(80)
$38.99
List price $79.99
Belva Nine Function Digital Multimeter
Perfect for any installation and troubleshooting
(7)
$9.99
List price $29.99
This is a must have! Set your crossover frequency like a Pro
(21)
$187.98
List price $197.98
High Quality Element Resistant AGU Fuse Holder
Belva BAGUH2 AGU Fuse Holder
(2)
$4.99
List price $9.99
Modular Linkable ANL Fuse Block
Modular Linkable ANL Fuse Block
(4)
$14.99
List price $59.99
4 Pack of 80 Amp Nickel-Plated MANL Fuse
Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses
(20)
$3.99
List price $8.99
4 Pack of 100 Amp Nickel-Plated MANL Fuse
Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses
(18)
$3.99
List price $8.99
4 Pack of 150 Amp Nickel-Plated MANL Fuse
Mini-ANL (MANL/AFS) 150A Nickel Plated Fuses
(11)
$3.99
List price $8.99
2 Pack of 100 Amp Nickel-Plated ANL Fuse
ANL 100A Nickel plated for better power transfer
(8)
$3.99
List price $7.99
2 Pack of 200 Amp Nickel-Plated ANL Fuse
Two fuses per order. High quality 200 Amp ANL Fuses
(23)
$3.99
List price $7.99
2 Pack of 300 Amp Nickel-Plated ANL Fuse
Two fuses per order. High quality 300 Amp ANL Fuses
(19)
$3.99
List price $7.99
Pair of 10 Gauge Spade Terminals, #8 Opening
Spade Terminals • 10 Gauge • 1 Red & 1 Black • Nickel Plated
(4)
$1.99
List price $3.99
Marine Grade Bluetooth Audio Controller/Receiver
Marine Grade Bluetooth Audio Controller/Receiver
(10)
$49.99
List price $62.49
500W RMS MX Series Class-D Monoblock Marine and Powersports Amplifier
(5)
$529.99
List price $529.99
SteelSeries Siberia V2 (Purple)
Closed Back Over-Ear Gaming Headset Stereo Headphones with Built-In Pull Out Microphone (51124)
$89.99
List price $89.99
Full Size Premium Wireless Bluetooth Stereo Headphones with Noise Cancelling Microphone
$39.99
List price $50.00
Memphis Audio SRXP69WTv2 (Sold Individually)
350W Peak (175W RMS) 6x9" Street Reference Pro Series 2 Way Pro Audio Coaxial 4-ohm Speakers with RGB LED Lighting
$79.99
List price $129.95
Closed Back Over-Ear Gaming Headset Stereo Headphones with Built-In Pull Out Microphone (51107)
$89.99
List price $89.99
400W Peak (360W RMS) Class D XED Series 4 Channel Car Amplifier
$169.99
List price $203.99
2000W Peak (1000W RMS) 15” Solo-Baric L7S Series Dual 2-ohm Subwoofer
(11)
$383.96
List price $509.99
5.25 to 6.5-inch Speaker Adaptor for Harley-Davidson
$54.99
List price $54.99
Cancel
Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
