Nux MG-300 : Compact Guitar Multi-FX Modelling Processor Pedal


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Dollar-for-dollar, the best multi-fx on the market. Our dream was to develop a compact and versatile multi-fx pedal at the right price. We understand that both beginners and working musicians are looking for compact size and great sound at an affordable price. This was a big challenge, and we’re proud to say we did it!

TSAC-HD Pre-Effects & Amp Modelling Deliver Realistic Feel & Playability
Core-Image Post-Effects Offer You Studio Sound Quality
Quick Tone (TM) Edit Software for Quickly Choosing & Tweaking Patches
Load 3rd Party IRs to Expand Sound Ability
USB Audio Stream for Recording Interface with Routing Set-Up
56 Drum Beats & 60 Seconds Phrase Loop Synchronization with Rhythm
Global 3-Band EQ for Quick Adjustments in Live Applications
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 Empowered by NUX TSAC-HD Technology

We’ve all experienced digital pre-effect pedals that belong on the Wall of Shame – especially Overdrive.

Modelers of this kind used the linear algorithm which doesn’t provide negative-feedback for dynamic playability.

Enter the NUX MG-300, the modeler that will totally blow your mind !

The pre-effect block beautifully recreates the awesome signature sound of real analogue overdrive / distortion pedals.

WHITE-BOX Amp Modelling Algorithm

Impulse Response

NUX is well-known for Impulse Response technology. Using IR is the most popular way to do cab simulation today. Why ? Because the sound is noticeably more realistic compared to traditional cab simulation.

MG-300 offers 512 sample resolution of impulse response. You can load 3rd party IR files using NUX QuickTone edit software. ( MG-300 supports 48kHz wav format. ) The built-in 25 cabinet IRs combine 4 classic microphones with 3 positions to allow beginners a quick and easy way to jump into the multi effects experience


NUX built the popular Mini Core Series and the Verdugo Series (post effects) using Core Image Technology. Now MG-300 provides you with the same sound library – including all the classic Chorus, Flanger, Phase, Vibe, Rotary, Vibrato, and more.


If you have tried out the Cerberus or Atlantic, you know NUX’s impressive Delay and Reverb sound. MG-300 offers even more new models and algorithms with Core Image technology. It also provides sub-division and tap tempo to make your tone more musical.


Just like the iconic sound of NUX’s Atlantic reverb algorithm, MG-300 adds Room for small environment reflection. Simple operation with great sound is our mission. Try it… you’ll love it!

Jam : Drum & Looper

MG-300 supports NUX Phrase Loop Synchronization with Rhythm – a breakthrough technology derived from the popular NUX Loop Core Stompbox and later the JTC Pro Drum & Loop. Every guitarist has his/her own funky way so a truly versatile drum & looper is indispensable. MG-300 has 8 rhythm styles, each style has 7 different beats. You can play the rhythm then record your phrase loop. MG-300 will automatically amend the phrase to fit the current rhythm BPM.

*MG-300 offers 60s phrase loop recording time.

Quick Tone : Editor Software

Connect to NUX Quick Tone™, and you can easily tweak parameters, download patches, load 3rd party IRs, and even set up USB audio-stream routing. Quick Tone is an interactive edit software – when you tweak the Real knobs, you’ll see your changes in Real time.

Note : USB Recording

For USB Recording, we suggest you set the I/O Buffer Size at 128 Samples.

Note : Expression Pedal

The Expression Pedal can be used to control the volume or the effects.

WAH : Controls the WAH filter.

EFX : Controls GAIN (DRIVE) parameter of OD/DIST. Or controls PITCH parameter of PITCH BENDER.

AMP : Controls LEVEL parameter of AMP.

MOD : Controls MIX level of Modulation effects.

DLY : Controls MIX level of Delay effects.

RVB : Controls MIX level of Reverb effects.

Detailed instructions on how to assign functions and how to calibrate the pedal are provided in the User Manual.