Multi-Effects for Electric Guitar

nUX MG-300 MK2

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Multi-Effects for Electric Guitar from nUX

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nUX MG-300 MKII multi-effects pedalboard review

The long-awaited MkII version! The MG-300 from nUX is a digital multi-effects pedalboard for guitar. It was first released in July 2020, but it wasn't until February 2025 that the brand evolved it. Externally, the device remains almost identical, with only a few slight modifications to report. On the other hand, nUX has pulled out all the stops in terms of updating its software. Read more…

Tech. sheet

Created on 02/17/2025

Manufacturer: nUX
Model: MG-300 MK2
Category: Multi-Effects for Electric Guitar
Other names:mg300mk2, mg 300 mk 2, mg300 mk2, mg 300mk2, mg 300 mkii, mg300mkii, mg300 mkii, mg 300mkii

Sampling frequency: 48 kHz
Digital-to-analog conversion: 32-bit
Frequency response: 20 Hz - 20 kHz
Dynamic range: 106 dB
Inputs and outputs :
- 1/4" mono jack input
- 1/4" mm TRS stereo jack output
- 1/8-inch (3.5 mm) mini-jack auxiliary input
- 1/8-inch TRRS mini-jack headphone output
- USB-C port (audio interface, firmware update)
Effects and modeling :
- 44 built-in effects
- 25 modeled amps
- 36 impulse responses (IR)
- Possibility of importing your own IR (24 slots)
Looper:
- Recording up to 60 seconds in stereo, 120 seconds in mono
Rhythm box :
- 10 styles with seven variations each (rock, blues, metal, etc.)
- Tempo adjustable from 40 BPM to 240 BPM

Videos

Q&A

1. What are the main improvements of the MG-300 MKII compared to the first version?

The MG-300 MKII brings several new features, including reduced latency, the addition of Scenes to change sounds without clipping, the ability to reorganize effects blocks and greater robustness of the chassis and footswitches.

2. Have the ergonomics of the MG-300 MKII been improved?

Not really. The interface remains unintuitive, and editing presets without using the Quick Tone software is complicated. On the other hand, the flexibility of the footswitches and the addition of new features partly compensate for this shortcoming.

3. Can the MG-300 MKII be used as an audio interface?

Yes, thanks to its USB-C port, it can be used as an audio interface for recording and editing sounds on a computer.

4. How good are the amp and effects models?

The Fender amp models are very good, as are some of the high-gain sounds (Bogner, Soldano). On the other hand, the Vox and Hiwatt models seem more artificial.