Overview

The NUX MG-400 packs pro-level amp modeling, cab simulation, and effects processing into a travel-friendly floor unit that costs less than a single boutique pedal. Two cutting-edge DSPs run NUX’s white-box algorithms, capturing the chaotic interplay of real tubes, transformers, and speakers—so every pick nuance translates into organic drive or sparkling cleans, even through headphones.

Performance & Capabilities

Each patch features 10 moveable blocks and three instantly recallable scenes, letting you toggle stomp-style layers or jump from rhythm to lead with a single press. The 512-sample IR engine supports third-party files for album-ready cabinet realism, while the 48-effect library covers compressors, modulations, pitch, ambient textures, and more. A 4-in/4-out USB-C interface turns the MG-400 into a zero-latency recording hub—track dry and wet signals simultaneously for easy re-amping.

Design & Construction

A bright 3.5″ TFT and four dedicated encoders streamline live tweaks, and the solid metal treadle delivers expressive wahs, volume swells, or morphing parameter sweeps. Gigging players will appreciate the global 3-band EQ, master volume knob, and five output modes that adapt quickly to amps, FRFR monitors, or in-ears.

Use Cases & Applications

– Home studio: record pristine DI or miked-cab IR tracks without waking the neighbors.
– Live performance: scene switching replaces amp channels and pedalboard tap-dancing.
– Teaching: 60 on-board grooves plus looper help students internalize timing.
– Content creation: stream high-resolution audio via USB-C while capturing camera audio separately.
– Travel practice: phones jack and aux-in make silent jamming simple in hotel rooms.

What’s Included

• NUX MG-400 pedal
• 9 V DC power supply
• USB-C cable
• Quick-start guide & warranty
• 10 × ChromaCast pearl celluloid picks (.60 mm, assorted colors)

Signal Processing

• DSP: Dual 32-bit floating-point
• Sampling: 48 kHz / 32-bit
• Dynamic Range: 108 dB
• System Latency: 1.1 ms

Modeling & Effects

• Amp Models: 25 guitar & bass
• Cabinet IRs: 25 + 12 user slots (512 samples)
• Effects: 48 total in 10 movable blocks
• Looper: 90 s mono / 45 s stereo
• Rhythm: 60 patterns with tap tempo

I/O & Connectivity

• Instrument Input: ¼″ TS, 470 kΩ
• Stereo Outputs: ¼″ L/R balanced
• Phones/Line: 3.5 mm stereo
• Aux Input: 3.5 mm stereo
• USB-C: 4-ch audio, firmware, QuickTone
• Expression: Built-in treadle + ext. jack

Power & Physical

• Power: 9 V DC < 280 mA (center –)
• Dimensions: 289 × 160 × 71 mm
• Weight: 920 g (2.03 lb)

ChromaCast Picks

• Material: Pearl celluloid
• Gauge: .60 mm light
• Shape: Standard 351
• Colors: Assorted pearl finishes
• Pack Size: 10 picks

Mooer GE200 packs 55 amps & 70 FX but costs $218 and lacks dual-DSP or scene switching. Zoom G3n offers 127 FX yet only seven simultaneous blocks and 32 amp/cab emulators. MG-400 balances 25 high-def amps, dual paths, movable blocks, and a 4-in/4-out USB-C interface—plus the included pick bundle—making it the most versatile sub-$600 solution.

Frequently Asked Questions

Can I load my own impulse responses?

Yes—QuickTone lets you import third-party IR files (48 kHz, 1024 samples) into 12 user slots for custom cabinet sounds.

Does the USB-C port support re-amping?

Absolutely. Record dry and wet tracks simultaneously, then send the dry track back through MG-400 for re-amping with any patch.

How many effects can run at once?

Up to 10 blocks per patch, with complete drag-and-drop order and parallel routing.

Is phantom power required?

No, the unit uses the supplied 9 V DC adapter and draws less than 280 mA.

Can I use heavier picks?

Yes—the bundle includes .60 mm light picks, but MG-400 works perfectly with any gauge you prefer.