NUX MG-400 multi-effects & amp modeler — top view with dual footswitches and screen
NUX MG-400 rear panel I/O — stereo outs, phones, aux in, USB-C
NUX MG-400 with expression pedal and color display on a pedalboard
NUX MG-400 amp and cab modeling with moveable effects blocks shown on screen
NUX MG-400 close-up — knobs, edit buttons, and footswitch labels
NUX MG-400 angle view — compact floor modeler with expression pedal
NUX MG-400 multi-effects — practice and recording with USB interface
NUX MG-400 with QuickTone editor workflow for presets and IRs
Click image to open expanded view
NUX MG-400 multi-effects & amp modeler — top view with dual footswitches and screen
NUX MG-400 rear panel I/O — stereo outs, phones, aux in, USB-C
NUX MG-400 with expression pedal and color display on a pedalboard
NUX MG-400 amp and cab modeling with moveable effects blocks shown on screen
NUX MG-400 close-up — knobs, edit buttons, and footswitch labels
NUX MG-400 angle view — compact floor modeler with expression pedal
NUX MG-400 multi-effects — practice and recording with USB interface
NUX MG-400 with QuickTone editor workflow for presets and IRs

NUX MG-400 Multi-Effects & Amp Modeler — Dual-DSP TSAC-HD

NUX
Price
$249
Only 1 left in stock!
Personally inspected by a working musician
Extended warranty available (SureBright)
Flexible payments (Progressive Leasing)
Expert, non-corporate service
Pickup available at 1935 Friendship Drive

Usually ready in 24 hours

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Best-value modeler. Big sounds. Easy workflow.
The NUX MG-400 packs dual-DSP power with TSAC-HD “white-box” amp modeling, flexible effect blocks, user IRs, and an intuitive interface—perfect for practice, recording, and the stage. Use the free QuickTone editor for deep editing, drag-and-drop signal chains, 3rd-party IR loading, and USB routing.

Why players love it

  • Dual DSP + TSAC-HD amp modeling for responsive feel and realistic drive/clean dynamics.
  • Moveable blocks with compressor, drives, mod, delay, reverb, EQ, wah/EXP and more—dial fast and save scenes.
  • 12 user IR slots (512-sample resolution) for your favorite cabs; includes 25 cabs and mic/position options.
  • USB audio interface with dry out & re-amp options—record direct, re-amp later, or stream.
  • Looper + rhythm for practice and idea sketching; scene mode gives three footswitchable sounds per preset.
  • Firmware-upgradable; V2.1.1 adds new amp models and smarter block switching.

Key features

  • Approx. 25 amp models / 25 cabs / 48 effects with expression pedal control
  • 12 IR slots, supports 3rd-party IRs (up to 48 kHz), 512-sample IR resolution
  • QuickTone editor for Mac/Windows: edit, manage IRs/patches, set USB routing
  • I/O: 1/4″ in, dual 1/4″ outs, 1/8″ phones, 1/8″ aux in, USB-C
  • Scene function: up to 3 scenes per preset; tap tempo; tuner

Great for

  • Guitarists or bassists needing a compact all-in-one for practice, gigs, and recording
  • Silent stages/IEMs and home studios using USB re-amp workflows
  • Players who want to bring their own IRs and keep editing simple

In the box

MG-400 unit, power adapter, USB cable, quick start/user manual.

Tip: Grab the free QuickTone editor from NUX to load IRs and manage presets fast.

Specs and features per NUX and published reviews. Firmware adds features over time.

Shipping Information

Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.
  • Dual-DSP Power USB Audio + Re-Amp User IR Loader Best-Value Modeler

Key Highlights

  • Dual-DSP TSAC-HD “white-box” amp modeling Moveable effect blocks for flexible routing Approx. 25 amps, 25 cabs, 48 effects 12 user IR slots (supports 3rd-party IRs) USB audio interface with dry out & re-amp Looper + rhythm for practice and songwriting 3 “Scene” switches per preset, tap tempo & tuner QuickTone editor for Mac/Windows Firmware-upgradable platform Compact, pedalboard-friendly footprint

Tech Specs

Model
NUX MG-400 Signal Processing: Dual DSP, TSAC-HD amp modeling Amp/Cab Models: ~25 amps / 25 cabs Effects: ~48 (comp, drive, mod, EQ, delay, reverb, wah, noise gate, etc.) IR Support: 12 user slots (3rd-party IR compatible) USB: 4×4 USB audio (recording, re-amp capable) Looper/Rhythm: Built-in looper with drum patterns Scenes: Up to 3 scenes per preset I/O: 1/4″ instrument in; dual 1/4″ outs; 1/8″ headphones; 1/8″ aux in; USB-C Expression: Built-in expression pedal Editor: QuickTone (Mac/Windows) Power: 9V DC (center-negative), ≥500 mA Included Firmware: Upgradable (latest available via NUX) Footswitches: 2 main switches + tap/scene functions Tuner: Integrated, footswitchable Construction: Rugged floor unit, pedalboard-ready

Warranty & Shipping

Warranty

NUX limited manufacturer warranty. Contact ECGMusic for support or DOA assistance—happy to help with troubleshooting, firmware, or exchanges per policy.

Shipping

Ships well-padded in retail box inside an outer carton. Signature may be required on higher-value orders. Returns per ECGMusic policy; buyer pays return shipping unless we made a clear error or item arrived damaged.

Video / Audio

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