Certified Refurbished (Open Box, B-Stock) From NUX USA

 

🏆 2026 Guitar World Best Budget Multi-Effect 🏆

The NUX MG-300 MKII is a compact guitar multi-effects processor and amp modeler designed for practice, recording, streaming, and live use. It features NUX’s TSAC-HD amp modeling, a flexible effects signal chain, user-loadable impulse responses, a built-in looper and drum machine, USB-C connectivity, and QuickTone editor support for deeper preset editing.

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

Key Features of the MG-300 MKII

Compact multi-effects and amp modeling processor
for guitar, bass, acoustic, practice, recording, and live performance.

TSAC-HD white-box amp modeling
designed to recreate tube amp response, dynamics, warmth, and touch sensitivity.

Amp model library includes 25 electric guitar amps, 1 acoustic amp model, and 1 bass amp.

Impulse Response support
with 512-sample IR processing and up to 24 user-loadable third-party IR slots.

Cabinet/mic shaping options
with 4 microphones and 3 mic positions for tone, depth, and presence control.

10 independent movable signal blocks, 
including noise gate, compressor, effects, EQ, modulation, delay, reverb, and more.

Customizable block routing
via the QuickTone editor, allowing users to reorder amps, effects, and IR blocks.

Built-in looper and drum machine
for riff building, practice, solo performance, and tone testing.

Full-color LCD display
for viewing amps, IRs, effects, and signal chains at a glance.

Expression pedal with toe switch
for wah, volume, or assignable effect parameter control.

Footswitches for preset switching and switching between scenes within a preset.

USB-C recording/streaming support
with routing modes including Normal, USB Loopback, Reamp, and Dry Out through QuickTone.

TRRS headset input
for vocals or commentary during livestreaming setups.

QuickTone editor software support
for editing amp models, effects, presets, scenes, IRs, USB routing, backups, and firmware updates.

 

What's Included

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

   

More about NUX Certified B-Grade, Open Box Items 💡

Items designated as B-Grade, Open Box are "like-new". We ensure that all B-Grade, Open Box items are inspected, tested, and properly graded at our warehouse in Los Angeles, California. 

Why buy directly from NUX 💡

All official NUX B-Grade, Open Box, and Refurbished listings from NUX USA come with a 1-Year Limited Manufacturer Warranty + Free U.S shipping + U.S-based dedicated support*.

*Official scratch and dent items from NUX USA come with a different warranty clause unless stated otherwise.