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NUX MG-300 MKII on a floor next to a guitar
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Black NUX multi-effects pedal with footswitch on a white background
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MG-300 MKII

Sale price$169.00Regular price $189.00

🏆 2026 Guitar World Best Budget Multi-Effect

Ideal for: Guitarists seeking versatile tone options, home recording enthusiasts, live performers, and musicians on a budget who refuse to sacrifice quality.

Due to high demand, we've OVERSOLD and are currently out of stock.

Pairs well with

In stock items ships in 3-5 business days

3-Year Warranty

Complimentary shipping & returns

About the MG-300 MKII

The NUX MG-300 MKII is a straightforward, compact modelling guitar processor that brings studio-level tone and flexibility into any setup. Featuring the advanced TSAC-HD white-box amp-modelling algorithm and a full effects suite, it’s designed for modern players who demand pro performance in a pedalboard-friendly footprint.

Advance Amp Modeling

TSAC‑HD white-box technology delivers realistic tube-amp tones with responsive dynamics.

Focused Amp Models

Features 36 high‑quality amp models: 28 electric guitar amps, 3 acoustic amp models, and 8 bass amps.

Impulse Response (IR) Support

Includes legendary preset cab IRs for wide range of uses plus the ability of supporting up to 24 3rd-party IR.

Block‑Style Effects & Routing

10 independent moveable signal blocks (NG, CMP, EFX, EQ, MOD, DLY, RVB, etc.) for a more customizable signal chain.

Built-In Looper & Drum Machine

Record, overdub, and layer tones with dynamic drum backing tracks for building riffs, testing tones, or performing solo sets.

QuickTone™ Editor Support

Edit amp models and effects, manage presets, load IRs, and configure USB‑C routing for recording or streaming.

What people are saying

An incredibly affordable way to get into multi-effects, and the tones on offer are outstanding.

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— Alex Lynham

A brilliant multi-effects pedal for the beginner guitarist. It’s packed full of great sounds and options, yet remains easy enough to navigate that newbie guitarists won’t struggle to get their heads around it.

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— Matt McCrackenJunior Deals Writer

NUX MG-300 MKII

Your First Step Into Tone Modeling

Start simple, explore more, and let your tone evolve with the MG‑300 MKII.

Tech at a glance

TS/AC-HD

NUX's TSAC‑HD (True Simulation of Analog Circuit – High Definition) technology recreates the behavior of classic tube amplifiers with stunning realism. Unlike simple digital modeling, NUX's white-box approach simulates the actual circuit response of each amp, capturing the dynamic feel, warmth, and touch sensitivity of analog gear.

Top-Shelf Amp Tones, Digitally Perfected

Enjoy NUX's TS/AC-HD Amp Models included with the MG-300 MKII:

  • 28 electric guitar amps,
  • 3 acoustic amp models, and
  • 8 bass amps.

512-sample (IR) support

Process high-resolution IRs that capture microphone placement, room reflections, and cabinet character, delivering realistic amp tones.

Expandable IR library (Up to 24)

Upload up to 24 of your own third-party IRs, giving you plenty of tonal possibilities.

Legendary mic & mic positions

4 microphones × 3 positions each give you full control over tone, depth, and presence.

Fully Customizable Signal Block Routing

NU-X MG-300 MKII effect block via quicktone editor app

Whether you prefer a traditional setup or want to experiment with new combinations, you can freely move each block to create the signal chain that works best for your style via the Quicktone™ Editor App.

Straightforward Controls

Easy-to-read LCD display and simple front-panel knobs let you adjust amp models, effects, and parameters quickly—no deep menu diving required.

Full-Color LCD Display

Easy-to-read screen shows amps, IRs, effects, and signal chains at a glance, making navigation fast and intuitive even in low-light or live settings.

Select Knob For Simple Menu Scrolling

Navigate through patches, scenes, and settings quickly with a single rotary knob.

Three Front-Panel Parameter Knobs

Tweak amp settings, effects, and tone parameters directly for real-time control without having to dig through menus.

Expression Pedal w/ Toe Switch

Control wah, volume, or other effect parameters on the fly, with a built-in toe switch for added convenience.

Footswitches For Preset Switching

Effortlessly switch between presets or jump between three scenes within a preset while playing

Simple, Versatile I/O

Flexible, straightforward I/O that makes recording, streaming, and everyday playing easy.

Simplified Streaming Setup

The MG‑300 MKII makes live streaming easy, sending studio-quality guitar tones to your computer or smartphone via USB‑C, with TRRS headset input for vocals or commentary.

Load video: Quickton software app interface demo

Unlock the Full Potential of Your Rig

Quickly edit amp models, effects, and signal blocks, manage presets and scenes, and load your own IRs. Configure USB routing for recording or streaming with ease. QuickTone™ makes designing, organizing, and personalizing your tone simple and intuitive.

QuickTone™ Editor Feature →

Desktop Software for Tone Customization

Instead of navigating small screens or multiple menus on the floor unit, you can see the full signal chain, blocks, IRs and amps at once on your computer.

Real‑Time Interaction

When you tweak the physical knobs or effect parameters in the app, QuickTone reflects those changes in real time — giving you visual feedback for what you’re doing.

Preset Organisation

You can organize and manage your patches and “Pro Scenes” (for switching within a patch) via the app

Custom IR Loading

You can import your own impulse response (IR) files into the 24 user-loadable IR slots available in the MG‑300 MKII.

Block Routing Control

QuickTone allows you to reorder signal blocks (amps, effects, IRs) easily, giving you flexible control over how your signal chain is structured.

USB Routing Configuration

QuickTone supports different USB‑C audio routing modes, like NORMAL, USB Loopback, REAMP, and DRY OUT

Backup & safety

Helps you create backups of your patches, so you’re less likely to lose your settings if you update firmware or change hardware setups.

Firmware Updates

Keep your unit up-to-date with the latest features and improvements.

What's Included

1 x MG-300 MKII, 1 x Power Adapter, 1 x USB-C Cable, User Manual