
MBQuart 4 x 80 Watt Compact Powersports Amplifier
The NA2-320.4 is a compact four-channel Class D powersports amplifier rated 4 x 80W into 2 ohms. Nickel-plated corrosion-resistant connections, aluminium heatsink and three-stage protection circuits - built for marine, UTV and motorcycle installs that have to live outdoors.
Key Features
- Full Range Class D, 4 channels with bridge-mono capability
- Variable high-pass crossover (12 dB/octave) on all channels
- Bass boost 0–12 dB at 45 Hz
- Variable input sensitivity 0.2–9V
- Three-stage protection: thermal, overload, DC, speaker short
- Nickel-plated corrosion-resistant connections
Specifications
| Specification | Value |
|---|---|
| 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 |
| High-Pass Crossover | Switched Full / HPF, 12 dB/octave (Ch 1–4) |
| 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 |
| Warranty | 2 Years |
Compatibility & Fitment
- Marine, motorcycle, ATV and UTV applications
- Suitable for indoor and protected outdoor installations
The NA2-320.4 is a compact four-channel Class D powersports amplifier rated 4 x 80W into 2 ohms. Nickel-plated corrosion-resistant connections, aluminium heatsink and three-stage protection circuits - built for marine, UTV and motorcycle installs that have to live outdoors.
Key Features
- Full Range Class D, 4 channels with bridge-mono capability
- Variable high-pass crossover (12 dB/octave) on all channels
- Bass boost 0–12 dB at 45 Hz
- Variable input sensitivity 0.2–9V
- Three-stage protection: thermal, overload, DC, speaker short
- Nickel-plated corrosion-resistant connections
Specifications
| Specification | Value |
|---|---|
| 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 |
| High-Pass Crossover | Switched Full / HPF, 12 dB/octave (Ch 1–4) |
| 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 |
| Warranty | 2 Years |
Compatibility & Fitment
- Marine, motorcycle, ATV and UTV applications
- Suitable for indoor and protected outdoor installations
Description
The NA2-320.4 is a compact four-channel Class D powersports amplifier rated 4 x 80W into 2 ohms. Nickel-plated corrosion-resistant connections, aluminium heatsink and three-stage protection circuits - built for marine, UTV and motorcycle installs that have to live outdoors.
Key Features
- Full Range Class D, 4 channels with bridge-mono capability
- Variable high-pass crossover (12 dB/octave) on all channels
- Bass boost 0–12 dB at 45 Hz
- Variable input sensitivity 0.2–9V
- Three-stage protection: thermal, overload, DC, speaker short
- Nickel-plated corrosion-resistant connections
Specifications
| Specification | Value |
|---|---|
| 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 |
| High-Pass Crossover | Switched Full / HPF, 12 dB/octave (Ch 1–4) |
| 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 |
| Warranty | 2 Years |
Compatibility & Fitment
- Marine, motorcycle, ATV and UTV applications
- Suitable for indoor and protected outdoor installations





















