KORG NTS 4 MIXER

6-Channel Mini-Jack Mixer for Desktop and Modular Synthesizers

• Compact Nu:Tekt audio mixer in a DIY kit, with no complex soldering required
• 6 analog channels: 4 stereo inputs and 2 mono inputs via 3.5 mm minijacks
• Mono inputs with internal attenuator switchable between Line level and Eurorack Modular level
• Dual effects engine: Send FX for the sends and Total FX on the master
• 3.5 mm stereo Send and Return jacks for integrating pedals and external effects
• Mute and CUE buttons for each channel and a CUE Balance knob for headphone monitoring
• Driver-free 24-bit/48 kHz USB-C audio and MIDI interface, with 3.5 mm MIDI OUT
• Protective steel chassis; powered via USB-C or an optional 9 V power supply

The Korg Nu:Tekt NTS-4 is a compact, one-of-a-kind audio mixer supplied as a DIY assembly kit for musicians who want a customizable and easily transportable mixing console. It’s designed for desktop setups featuring synthesizers, grooveboxes, Volca series instruments, and Eurorack modular systems. Assembly is simple and rewarding, requires no complex soldering, and the final result is rugged thanks to the protective steel chassis. With built-in effects, an advanced monitoring system, and a USB-C audio interface, the NTS-4 becomes the centerpiece of your setup in the studio and on stage.

6-Channel Mixer for Volca, Desktop Synths, and Eurorack

The NTS-4 offers 6 analog channels, divided into 4 stereo inputs and 2 mono inputs, all via 3.5 mm minijack connectors. Each channel features dedicated knobs for level and effects send, as well as independent Mute and CUE buttons. PAN control is available on the two mono channels.

Mono Inputs at Line or Modular Level

One of the NTS-4’s key strengths is its level flexibility: the two mono channels feature a switchable internal attenuator, allowing you to work natively with both line-level signals and the high-voltage signals from Eurorack modules.

Integrated Send FX and Total FX

The mixer is equipped with a dual processing engine. The Send FX processor applies effects to the sends using algorithms for Delay, Ping Pong Delay, Hall Reverb A and B, Slap Reverb A and B, and Chorus. The Total FX processor acts on the master channel with LPF, HPF, Isolator, Flanger, Phaser, Decimator, Drive, Distortion, Compressor, and Limiter. A 3-digit LED display and EDIT controls let you adjust the effects in real time.

Send and Return for Pedals and External Effects

The physical stereo Send/Return bus via 3.5 mm minijacks easily integrates external pedals and signal processors, expanding the processing capabilities of your setup.

CUE for live performances and USB-C audio interface

Designed with live performances in mind, the NTS-4 includes independent CUE buttons per channel and a CUE Balance knob for mixing the CUE signal with the main mix in your headphones. The unbalanced MAIN OUT L/R outputs use 6.3 mm jacks, while the headphone output is a 3.5 mm jack.

Audio and MIDI via USB-C

The USB-C connection transforms the mixer into a driver-free 24-bit/48 kHz audio and MIDI interface, ideal for recording your performances on a computer or mobile device. The physical 3.5 mm MIDI OUT jack (MIDI Type A) provides automatic pass-through of MIDI data received via USB. The NTS-4 interfaces with the Volca series, desktop synths, Eurorack modules, PCs, Macs, and iOS devices, and is powered via the USB-C bus or an optional 9V power supply.

Package Contents

• Korg Nu:Tekt NTS-4 Mounting Kit
• USB-C to USB-A cable
• Manuals and detailed assembly instructions

Technical Specifications

• Brand: Korg
• Model: Nu:Tekt NTS-4
• Type: Compact audio mixer assembly kit
• Construction: kit requiring no complex soldering, protective steel chassis
• Channels: 6 analog (4 stereo, 2 mono)
• Mono inputs: switchable internal attenuator, Line or Eurorack modular level
• Input and auxiliary connections: 3.5 mm mini-jacks
• Main outputs: unbalanced MAIN OUT L/R, 6.3 mm jacks
• Headphone output: 3.5 mm mini-jack
• Send / Return: stereo, 3.5 mm mini-jack
• FX Sends: Delay, Ping Pong Delay, Hall Reverb A/B, Slap Reverb A/B, Chorus
• Total FX: LPF, HPF, Isolator, Flanger, Phaser, Decimator, Drive, Distortion, Compressor, Limiter
• Per-channel controls: Level, Send FX, Mute, CUE; PAN on both mono channels
• Monitoring: CUE per channel, CUE Balance knob
• Display: 3-digit LED, EDIT controls
• USB-C: 24-bit / 48 kHz audio and bidirectional MIDI, driver-free
• MIDI OUT: 3.5 mm minijack (MIDI Type A), USB pass-through
• Compatibility: Volca series, desktop synths, Eurorack modules, PC, Mac, iOS
• Power: USB-C bus power or 9 V power supply (optional)
• Dimensions: 195 x 125 x 38 mm
• Weight: 613 g
• Included accessories: USB-C to USB-A cable, manuals, and assembly instructions