NUX MG-400 Modeling Guitar Processor

The NUX MG-400 delivers an array of amp emulations and effects as dynamic and diverse as the players who plug into it. The secret to the MG-400’s tone rests in its White Box Amp Modeling Technology, a high-definition analog circuit simulation that accurately and responsively captures the inherent qualities of the amps and effects it replicates. With over 25 amp models inspired by classic sounds that cover the gambit of blues, pop, classic rock, and heavy metal; a slew of authentic cabinet, microphone, and acoustic impulse responses (IR); and an extensive collection of modulation, overdrive/distortion, EQ, and gate/compression effects, the MG-400 is working overtime to provide you a top-tier digital guitar tone experience. The MG-400 also houses a number of practical features, such as a phrase looper, drum machine, metronome, and USB audio interface with QuickTone editing software for saving and customizing detailed presets. Essential to the modern player, Guitarists know how invaluable these features are for enhancing their workflow, optimizing practice time, and maximizing their rig. Whether playing onstage, recording in the studio, or jamming at the rehearsal space, the NUX MG-400 is an all-in-one amp and effects modeler designed to spark creativity and unleash massive tone.

The NUX MG-400 is a value packed modeler akin to his little brother, the MG-300. MG-400 houses 2 powerful DSP chips for high-definition White-Box Amp Modeling algorithm (TS/AC-HD) and Core-Image post-effects. Since releasing the MG-300, people have been blown away by the sound and playability, not to mention the ease-of-use tone tweaking and intuitive interface. And now, the MG-400 builds upon the MG-300 feature set moveable signal blocks, 12 IR COLLECTION slots, flexible P.L block with MIN & MAX parameter setup, abundant SYSTEM MENU, and physical MASTER volume knob, MG-400 is now the best value modeler for the money.

The White-box Amp Modeling & Pre-Efx algorithm offers realistic playability and analog-chaos response.

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-time feedback, increment-by-increment. NUX TS/AC-HD replicates the same playability most guitarists crave in a real tube amplifier.

The MG-400 includes multiple impulse response of 512 samples each. You can load 3rd party IR files using our NUX QuickTone edit software (support up to 48kHz sample rate). The included 25 guitar cabinet IRs combine 4 classic microphones with 3 mic positions to allow beginners a quick and easy way to jump into the multi effects experience. Also included are 8 bass cabinet IRs and 3 acoustic guitar IRs, giving you the ability to play bass guitar on MG-400 or use electric guitar to simulate acoustic guitar sound with acoustic guitar IRs.

10 Independent Flexible Blocks

NG, CMP, EFX, AMP, IR, EQ, MOD, DLY, RVB, P.L | 10 independent moveable signal blocks.

You can move signal blocks freely on the MG-400 and/or QuickTone editing software. Set the PATCH LEVEL block in front of AMP to swell the volume. Put DELAY block in front of gain stage to create grooving riffs. There are lots of tone creations with the flexible block routing.

Since Firmware V2.1.1, you can hold the signal block to switch: CMP<–>EFX , EFX<–>MOD , MOD<–>EFX, RVB<–>DLY. Therefore you can stack 2 Delays at the same time, or stack the CMP or 2 EFXs (OD/DIST) at the same time!

Jam (Drum & Looper)

Perfect for Playing and Singing

The MG-400 supports NUX Phrase Loop Synchronization with Rhythm. You can play the rhythm then record your phrase loop. MG-400 will automatically beat match the phrase to fit the current rhythm BPM.

*Choose either STEREO / MONO looping. (Stereo is 30 seconds, mono is 60 seconds.)

Two Recording Modes

*NR = Normal Recording works as regular loop function, while you press CTRL1(LOOP) footswitch, it starts to record the phrase loop.

*AR = Auto Recording will stand by while you press CTRL1(LOOP) footswitch, once you hit the strings, it will start to record your phrase loop.

QuickTone™ Editor Software​

You can download the QuickTone™ editor from the MG-400 product page. An intuitive interface is provided for tweaking parameters, dragging block order, setup SCN, save patches, load patches, export patches, load IRs, set up USB routing and CTRL SETTING; all by simply using QuickTone™.

USB Audio Interface

For home studio and silent practice, the MG-400’s USB audio capabilities makes it the Swiss Army Knife of guitar audio interfaces. Connect it via USB to your PC, and you can record tracks, reamp, and even do livestreaming with the MG-400.

In Normal mode, you can choose Loopback to play the playbacks from PC when doing a live stream.

Re-amp: MG-400 offers Dry Out and Re-amp recording applications.