The NU-X MG-300 MKII packs an impressive range of guitar amps, effects and recording tools into one compact, affordable processor. Whether you're learning guitar, building your first effects setup or looking for a versatile alternative to a traditional pedalboard, the MG-300 MKII gives you plenty of room to experiment.
Powered by NU-X's TSAC-HD amp modelling technology, it delivers responsive amplifier sounds alongside overdrives, distortions, delays, reverbs and modulation effects. With customisable signal routing, an expression pedal, a built-in drum machine, a looper, and USB-C connectivity, it's ready for home practice, recording, and live performance.
FEATURES
- TSAC-HD Amp Modelling – NU-X's White-Box modelling technology recreates the dynamic response and playing feel of analogue tube amplifiers.
- Extensive Amp & Cabinet Selection – Includes 25 guitar cabinet IRs, 8 bass cabinet IRs and 3 acoustic IRs.
- 24 User-Loadable IR Slots – Import your own impulse responses to customise your cabinet sounds.
- Comprehensive Effects Library – Overdrives, distortions, compressors, modulation, delays, reverbs and EQ.
- Customisable Signal Chain – Arrange effects and amplifier blocks in your preferred order.
- Pro Scene Selection – Switch between up to three different sounds within a single preset, ideal for clean, rhythm and lead tones.
- Built-In Expression Pedal – Control volume or assigned effects, with an improved physical toe switch.
- Phrase Looper – Record up to 60 seconds in stereo or 120 seconds in mono.
- Integrated Drum Machine – Play along with rhythm patterns for practice, songwriting and jamming.
- USB-C Connectivity – Connect to a computer for recording, editing and USB audio routing.
- Live Streaming Support – TRRS-compatible headphone connection, microphone-level adjustment, and noise gate functions.
- QuickTone Editor Software – Edit sounds, rearrange effects, manage presets and import IRs from your computer.
- Flexible Footswitch Configuration – Choose between preset switching, scene switching or a combination of both.
- Independent Output Level Controls – Adjust headphone and main output levels separately.
Our Take
Want to try a hundred different guitar sounds without buying a hundred different pedals? Then MG-300 MKII makes a lot of sense, particularly if you're still discovering the sounds you like. Want a big high-gain amp for metal? Something clean and spacious with a little delay? A crunchy rhythm tone and a boosted solo sound? It's all in there, ready to experiment with.
NU-X hasn't forgotten about the actual playing experience. The TSAC-HD modelling is designed to respond like a real amplifier, rather than simply giving you a collection of digital sounds. The Pro Scene feature is particularly useful too: set up your clean, rhythm and lead sounds within one preset and switch between them without building three completely separate patches.
For beginners, the drum machine, looper and headphone output make this a brilliant little practice companion. For more experienced players, flexible effects routing, custom IRs and USB recording capabilities provide plenty of room to experiment.
The MG-300 MKII is a great choice for guitarists building their first effects setup, bedroom players, home recording enthusiasts and anyone wanting a compact, affordable alternative to a pedalboard full of individual effects.
It's a lot of guitar bag for one little box — and considerably easier to explain to your bank account.
Specifications
- Brand: NU-X
- Model: MG-300 MKII
- Type: Guitar Modelling & Multi-Effects Processor
- Amp Modelling: TSAC-HD White-Box
- Guitar Cabinet IRs: 25
- Bass Cabinet IRs: 8
- Acoustic IRs: 3
- User-Loadable IR Slots: 24
- Microphone Models: 4
- Microphone Positions: 3
- Pro Scenes: Up to 3 per preset
- Looper: 60 seconds stereo / 120 seconds mono
- Expression Pedal: Integrated, with physical toe switch
- Software: NU-X QuickTone
- USB Connection: USB-C
- Headphone Connection: TRRS Supported
- Sampling Frequency: 48kHz
- A/D Conversion: 32-bit
- Frequency Response: 20Hz–20kHz (+1dB)
- THD+N: Less than 1%
- Dynamic Range: 106dB
- Input Level: +8dBu
- Output Level: +8dBu
- Power Supply: DC 9V
