MBQuart 4 x 80W Compact Powersports Amplifier Four-channel Class D audio for marine, UTV and motorcycle
The NA2-320.4 is a compact four-channel Class D amplifier built specifically for powersports and marine installs, delivering 320W total power with corrosion-resistant hardware that holds up wherever the track takes you.
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Item code: MBQ-NA2-320.4
Australian Owned and Operated.Australian Owned Certified · AO 08314
Built to sound
right.
The NA2-320.4 is a compact four-channel Class D amplifier built specifically for powersports and marine installs, delivering 320W total power with corrosion-resistant hardware that holds up wherever the track takes you.
The MBQuart NA2-320.4 brings serious amplification to the harshest install environments, rated at 4 x 80W into 2 ohms and 4 x 40W into 4 ohms for a total of 320W. Class D efficiency keeps heat low in tight enclosures, while the aluminium heatsink and nickel-plated connections resist the corrosion that kills conventional amplifiers in marine, UTV and motorcycle applications. A variable high-pass crossover on all four channels and a 0-12 dB bass boost at 45 Hz give you meaningful tuning control without an external processor. Bridge-mono capability adds flexibility for builds that need a dedicated subwoofer channel alongside full-range outputs.
Three things that matter.
Three-Stage Protection Circuit
Thermal, overload, DC fault and speaker-short protection work together to safeguard both the amplifier and your speakers during the sustained vibration and temperature swings common to powersports use.
Corrosion-Resistant Hardware
Nickel-plated RCA inputs and output connections resist oxidation from salt spray, mud and moisture, making the NA2-320.4 a genuine fit-and-forget solution for marine and outdoor installs.
Onboard Tuning Controls
A variable high-pass crossover (12 dB/octave) across all four channels, combined with a 0-12 dB bass boost fixed at 45 Hz and wide 0.2-9V input sensitivity range, lets you dial in the system without additional signal processors.
Full specs.
Total Power Output
320 W
Power per Channel @ 2Ω
4 x 80 W
Power per Channel @ 4Ω
4 x 40 W
Amplifier Class
Class D
Channels
4
Bridge-Mono Capable
Yes
High-Pass Crossover
Switched Full / HPF, 12 dB/octave (all channels)
Bass Boost
0-12 dB @ 45 Hz
Input Voltage Range
0.2-9 V
RCA Inputs
2 pair, nickel-plated
Heat Sink
Aluminium
Protection
Thermal, overload, DC, speaker short
Colour
Black
Compatibility
Marine, motorcycle, ATV and UTV applications
Warranty
2 Years
Hear the
difference.
Add it to your build, or browse the full MBQuart range to match speakers, components, subs and amplifiers.
