Clean power up front
85 watts to each front speaker at 4 ohm, 150 at 2 ohm, or bridge to 300 watts. Under 0.02% distortion and a 99 dB signal to noise ratio.
3-Channel with Sub Output
NX700.3
Front Stage. Sub Stage. One Amp.
Two full-range channels for your front speakers and a dedicated 425 watt subwoofer channel in one compact Class D chassis. Independent crossovers, EPS high-level inputs, remote bass control ready.
$599.95Free shipping.
Free nationwide shipping
3 year warranty included
30 day hassle-free returns
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2021 to 2026
Hi-Fi Product of the Year
100% German
Engineered and measured
3 Year
Warranty on every unit
Plug and Play
Factory-fit integration
Why drivers upgrade
A full system upgrade from a single box.
Most drivers want clearer front speakers and real bass. The NX700.3 does both without a second amplifier, a second power run, or a second mounting spot.
Real bass from the same chassis
A dedicated subwoofer channel with 250 watts at 4 ohm and 425 at 2 ohm, its own low pass, subsonic filter, and 18 dB of boost at 40 Hz.
One install instead of two
3.5 by 1.6 by 6.6 inches, one power wire, one fuse, one location. High-level inputs and auto turn-on keep the factory radio in place.
Built for the details
Front speakers and subwoofer, handled by one amplifier.
85W x 2 Full Range.
85W at 4 ohm, 150W at 2 ohm, bridged 300W for the front stage.
Independent Crossovers
20 to 400 Hz low or high pass on the front pair, 50 to 250 Hz low pass and 10 to 50 Hz subsonic on the sub.
25W Subwoofer Channel
250W at 4 ohm, 425W at 2 ohm, with its own low pass, subsonic filter, and bass boost.
Remote Bass Control
Add the DRC1 knob to adjust sub level from the dash.
EPS High-Level Inputs
Type D inputs with connectors included, auto turn-on from factory speaker wires.
Start-Stop Ready
Runs from 10.5 to 16.5 volts and stays stable through engine start-stop cycles.
Technical specifications
| Amplifier type | 3-channel digital Class D, 2 full range plus 1 subwoofer |
|---|---|
| Front channels at 4 ohm | 85W x 2 |
| Front channels at 2 ohm | 150W x 2 |
| Front bridged at 4 ohm | 300W |
| Subwoofer at 4 ohm | 250W |
| Subwoofer at 2 ohm | 425W |
| Frequency response | 4 to 50,000 Hz (-3 dB) |
| Signal to noise | greater than 99 dB |
| THD+N | under 0.02% at 5W |
| Input sensitivity | 470 mV to 8.7 V |
| Front crossover | low or high pass, 20 to 400 Hz |
| Sub filters | low pass 50 to 250 Hz, subsonic 10 to 50 Hz |
| Bass boost | 0 to 18 dB at 40 Hz |
| Operating voltage | 10.5 to 16.5 V |
| External fuse | 60 A |
| Dimensions | 3.5 x 1.6 x 6.6 inches |
| Warranty | 3 years |
| Box | 1x NX700.3 amplifier, 1x high-level input connectors, 1x owner's manual, 1x mounting hardware |
| Note | A 60 A external fuse and 4 gauge power wire are recommended. Add the DRC1 at checkout for a bass knob in the dash. |
What is in the box
- 1xMusway M6 512K amplifier
- 1xPower harness
- 1xInput and output harness
- 1xUSB tuning cable
- 1xExtra 30 amp ATC fuse
- 1xMounting hardware
- 1xOwner's manual
Add the PK-RCA6 RCA input harness at checkout if you are feeding the M6 from an aftermarket head unit with RCA outputs.
Installation
Three steps to a full system.
1
Connect
Run one power and ground, then plug the high-level connectors into your factory front speaker wires. Auto turn-on handles the rest.
2
Mount
At 3.5 by 6.6 inches it fits beside the sub box or under a seat. Class D runs cool with no fan.
3
Tune
Set the front high pass around 80 Hz, the sub low pass to match, add boost to taste, and control level with the DRC1.
Compare
Why not just buy two amplifiers?
| Feature | Factory system | Generic amp | Musway NX700.3 |
|---|---|---|---|
| Front speakers and sub from one amp | − | − | |
| Dedicated sub channel with subsonic filter | − | Varies | |
| One power run and one fuse | − | ||
| Plug and play with factory wiring | − | ||
| Start-Stop ready | − | Varies | |
| 3 year warranty | − | Varies | |
| Compact 3.5 inch wide chassis | − | − |
Featured reviews
Drivers who upgraded the whole system in one afternoon.
★★★★★
Today's offer
NX700.3 with free nationwide shipping. 16 in stock.
Order the NX700.3 on its own, or pair it with the DRC1 bass remote, Musway front speakers, or an MG10 subwoofer so the complete system arrives in one box.
- Free nationwide shipping on every order
- 3 year warranty registered automatically
- 30 day returns if it is not the upgrade you expected
- DSP software, manual, and wiring diagrams included with your order
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QuestionsChoose your kit
Everything you want to know before you order.
Still unsure if the M6 512K fits your vehicle? Every order includes free fitment and tuning support from the Musway USA team.
Yes. The Type D high-level inputs with EPS accept factory speaker wire signals with auto turn-on, so the dash stays untouched.
Any 4 or 2 ohm sub. Wire it for 2 ohm to get the full 425 watts.
The NX700.3 is built for front speakers plus a sub. Keep rears on the factory radio or add an NX125.4 for four more channels.
No, but the DRC1 adds a bass knob in the dash so you can adjust sub level per song.
A 60 A external fuse and 4 gauge power and ground wire are recommended.
Return it within 30 days in its original packaging for a full refund.
Your next drive should sound complete.
Front stage and sub stage from one amplifier, no factory parts replaced. Free nationwide shipping, a 3 year warranty, and 30 days to decide.
30 day money back guarantee
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Every review, straight from the driver's seat.
★★★★★
4.6 out of 5 from 86 verified reviews
NX700.3
$599.95
$599.95
