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Product Overview

The NX700.3 is a powerful and space-efficient 3-channel amplifier designed to run a full front stage plus a dedicated subwoofer from a single unit. With flexible filtering, high-level input compatibility, and efficient Class-D performance, it’s an ideal all-in-one solution for modern vehicle audio systems.

Gray amplifier with Musway logo on a white background

Product Specifications

Model: NX700.3
Channels: 3
Circuit: Digital Class D
Power @ 14.4 V (≤1% THD+N):
CH1 / CH2:

Watts @ 4 Ohms: 2 × 85
Watts @ 2 Ohms: 2 × 150
Watts @ 4 Ohms bridged: 1 × 300
SUB:
Watts @ 4 Ohms: 1 × 250
Watts @ 2 Ohms: 1 × 425
Frequency Range: 4 – 50,000 Hz @ -3 dB
Signal-to-noise Ratio: > 99 dB
THD+N @ 5 W: < 0.02 %
Input Sensitivity: 470 mV – 8.7 V
Filter Section (CH1 / CH2):
Low Pass Filter or High Pass Filter: 20 – 400 Hz
Filter Section (SUB):
Low Pass Filter: 50 – 250 Hz
Subsonic Filter: 10 – 50 Hz
Bass Boost @ 40 Hz: 0 – 18 dB
Operating Voltage: 10.5 – 16.5 V (max. 5 sec. down to 7 V)
Start-stop Capability: Yes
High Level Input with EPS*: Yes (Type D, via included cable connectors)
Auto Turn-on: Yes (via High Level Input)
Bass Level Remote Controller (SUB): Yes
Fuse (external): 60 A
Dimensions:
Width: 89 mm
Height: 41 mm
Length: 168 mm

Product Description

Engineered for versatility, the NX700.3 combines clean full-range amplification for front speakers with a strong mono subwoofer channel. Advanced crossover controls allow precise tuning for both speaker and sub outputs, while EPS-enabled high-level inputs ensure seamless integration with factory head units. Its compact footprint and start-stop compatibility make it perfect for OEM-friendly upgrades without compromising power or sound quality.

Musway USA

Optional Accesories