NUX MG-300 MKII Multi-Effect Pedal
NUX - MG-300 MKII Modeling Guitar Processor, Fully-customizable Blocks, 24 User-loadable IR Slots
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Modeling Guitar Processor
NUX - MG-300 MKII
Powerful & Versatile - For the modern musicianThe NUX MG-300MKII retains all the beloved effects of the MG-300, delivering everything from rich overdrives and dynamic compressors to lush delays, expansive reverbs, and precise EQs. With a comprehensive selection that includes 1 Noise Gate, 2 COMPs, 13 OD/DISTs, 1 Touch Wah, 2 EQs, 14MODs, 7 DLYs, 5 RVBs, this unit has it all. A special Patch Level (P.L) block is available so you can place it anywhere in your effect routing and adjust the level through it.
What sets the MG-300MKII apart is the addition of the new Shimmer Reverb. Elevate your sonic palette with this ethereal effect, perfect for creating spacious, atmospheric soundscapes that add a whole new dimension to your music. In the EDIT mode, you can switch the function of CMP, EFX, or RVB by long-pressing the block, opening up endless creative possibilities for crafting your perfect tone.
amazing features
• Compact in size with a large LCD display for better visibility
• Lower latency for smoother, more dynamic sound
• Pro scene selection, offering seamless sound changes during performance
• Perfect companion for recording and live streaming, with full functionality
• Fully-customizable blocks, including a Patch Level block
• Tweakable footswitch setup
• 24 user-loadable IR slots to freely create your unique tones
WHITE-BOX Modeling Algorithm
high-performanceIn 2010 NUX introduced TSAC (True Simulation of Analog Circuit) with the sole intention of bringing Amp Modeling to a whole new level. The DSP industry has been evolving at breakneck speed, and keeping up can be a challenge. Impressed that a product like the Fractal AXE-FX had the foresight to use a high-definition TSAC (white-box) algorithm to do its Amp Modeling, NUX took note and started development on an affordable modeler with TSAC-HD.
The concept of “Chaos makes the muse” perfectly applies to the analogue circuit. When you tweak the knob, it affects itself as well as other parameters. For a linear digital system, the parameter is independent. The white-box algorithm offers real negative-feedback, increment-by-increment. NUX TSAC-HD replicates the same playability most guitarists prefer in a real tube amplifier.
Building a sky-high priced product is easy. The art of building an affordable product is a real challenge. NUX priced the MG-300, with a straightforward high-performance algorithm to not only fit this specific DSP platform, but dominate the multi-efx platform in general.
Impulse Responses
36 built-in IRs, 24 user-loadable slotsThe NUX MG-300 MKII offers advanced Impulse Responses (IRs) for authentic tone reproduction. It features 25 guitar cab IRs, 8 bass cab IRs, and 3 acoustic IRs, capturing the essence of real-world counterparts from vintage warmth to modern clarity.
With 4 microphone models, 3 mic positions, you can shape your sound precisely. Seamlessly integrated with the MG-300 MKII’s amp modeling and effects, these IRs provide an immersive experience, delivering legendary amplifier realism on stage, in the studio, or during practice.
The NUX MG-300 MKII also includes 24 user-loadable IR slots, allowing you to import and save your own Impulse Responses. This feature offers extensive customization, letting create unique and more personalized tones. Each IR can be individually adjusted with LEVEL, HIGH-CUT, and LOW-CUT controls, giving you complete control over your sound.
JAM Mode
Looper and Drum MachineThe NUX MG-300 MKII expands your musical creativity with its integrated Phrase Looper and versatile drum machine. The Phrase Looper allows you to layer guitar lines effortlessly, creating rich, textured sounds perfect for solo performances or songwriting. The drum machine, equipped with auto tempo detection, synchronizes its rhythm to match your playing speed, enhancing both practice sessions and live performances with seamless, cohesive rhythms. Choose between STEREO (60 seconds) or MONO (120 seconds) looping to suit your needs.
Ultimate Flexibility
Fully Customizable Signal Block RoutingFreely position effects and amp blocks in any order, providing unprecedented control over your signal chain.
Tweakable Footswitch
complex sound changesThe MG-300 MKII introduces a tweakable footswitch setup, allowing you to fully customize your footswitch configuration. Preset Up and Down: Simplify preset navigation, allowing quick switches between presets. Scene Up and Down: Navigate through three scenes within a preset for layered sound changes. Scene Down and Preset Up: This hybrid setting lets you access different presets while managing scenes within them. Additionally, you can deactivate Scene 3 for straightforward A/B sound switching between Scene 1 (S1) and Scene 2 (S2).
The MG-300 MKII also has an upgraded expression pedal switch. Compared to the previous version, it now features a physical Toe Switch, offering more convenience and a clear ‘switching feel’. And there’s no need for ‘expression pedal calibration’ anymore.
Comprehensive and Powerful I/O Capabilities
smooth integrationThe MG-300 MKII features modernized connectivity to meet the needs of today’s musicians. It comes equipped with a USB-C port for smooth integration with music production software and an enhanced TRRS-supported Phones jack, perfect for headphones with built-in microphones.
TRRS jack and USB-OTGFor live streaming, the TRRS jack and USB-OTG compatibility make it easy to connect to smartphones. Fine-tune your sound with dedicated microphone level controls and a built-in noise gate for clear, professional audio delivery.
USB-C connectivityConnect your MG-300 MKII to the computer via USB-C, it can work as an audio interface. You can choose which input routing setting you want to go with the Quicktone Desktop Editor Software. The MG-300 MKll streamlines your recording and streaming workfow with tailored connection modes. Each mode is crated to simplify your process, letting you concentrate on making music.
Perfect for Live Performances
unique sound configurationNavigate through three distinct scenes within a single preset, each offering a unique sound configuration. With the Pro Scene Selection feature, you can change effects models, amp models, settings, and more, all within the same preset. This capability is ideal for live performances where quick sound changes are crucial, allowing you to switch seamlessly between different tones and setups. Whether you need a clean sound for verses, a crunchy tone for choruses, or a lead boost for solos, Pro Scene Selection ensures that you’re always ready with the perfect sound at the tap of a footswitch.
Real-Time Output AdjustmentAdjust your output in real-time with the NUX MG-300 MKII’s intuitive controls. Use Knob 1 to fine-tune the phones output and Knob 2 to manage the main output. If you’re on stage, in the studio, or practicing at home, these easy-to-access knobs ensure your sound is always perfectly balanced.
QuickTone Editor Software
Full Editing ControlThe NUX MG-300 MKII comes with the powerful QuickTone software editor, designed for intuitive sound customization. This newly designed user-friendly interface allows you to easily tweak parameters, reorder effect blocks, and manage your patches. With QuickTone, you can import and save your own Impulse Responses, organize Pro Scenes, and configure USB routing with ease. Whether you’re fine-tuning your tone or exploring new soundscapes, QuickTone gives you the control and flexibility to shape your perfect sound.
BRAND NEW | NUX MG-300 MKII Modeling Guitar Processor

The Tech Spec
| Features | Specification | Amp Modeling | Yes, 25 x Guitar Amp, 1 x Bass Amp, 8 x Bass Cab |
|---|---|
| Impulse Response | Yes, 3 x Acoustic IR, 24 x User IR |
| Looper | Up to 60 seconds |
| Expression Control | Yes, Built-in Pedal |
| Inputs | 1 x 1/4", 1 x 1/8" (aux) |
| Outputs | 1 x 1/4" |
| Headphones | 1 x 1/8" |
| USB | 1 x USB-C |
| Power Source | 9V DC power supply (included) |
PayPal Credit
| Monthly Payment: | £11.78 |
| Instalment Rate: | 16.9% p.a. (fixed) |
| Cost of purchase: | £130.00 |
| Total inc. interest: | £141.32 |
| Example | |
| Minimum Spend: | £99 |
| Instalment Rate: | N/A |
| Cost of purchase: | £99 |
| Total inc. interest: | £99 |
Representative Example:
Purchase Rate: 23.9% p.a. (variable)
Representative: 23.9% APR (variable)
Assumed Credit Limit: £1,200
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