Korg NTS-4 Mixer

KORG NTS-4 Compact Performance Mixer for Modern Synth Setups
The NTS-4 is a flexible and powerful mixer in the Nu:Tekt series. With six channels, built-in effects, and USB audio/MIDI, it is designed to sum, mix, and play with volca units, NTS instruments, modular synths, and other synths in a cohesive setup.

Six channels—a unified setup
With four stereo channels and two mono channels, the NTS-4 makes it easy to combine multiple instruments into a single rig, supporting up to ten audio signals. Each channel features level control, mute, CUE monitoring, and FX send for flexible mixing and control. All inputs use 3.5 mm mini-jacks, designed for volca units, NTS instruments, and other synth gear.

Designed for Synths and Modular Synths
The mono channels handle both line-level and modular-level signals, making it possible to integrate Eurorack systems. Dedicated SEND and RETURN connections also make it easy to use external effects.

Shape the mix in real time
Two independent stereo effects engines provide channel-based SEND effects, and a TOTAL FX section processes the entire mix. Effects include delay, reverb, modulation, drive, and compression.

Hands-on control for live performance
Each channel features CUE and MUTE controls. Preview the sound through headphones before bringing it into the mix, or create quick transitions with instant muting.

Seamless integration into your setup
USB-C provides 24-bit audio and MIDI for recording, streaming, and DAW integration. Hardware and software can be combined, and MIDI received via USB can be sent to external equipment via MIDI OUT. Standard 1/4" outputs provide connectivity to studio and live systems.

Compact, sturdy, and built for long-term use
The steel construction ensures stability even in setups with many cables. Despite its size, the NTS-4 is built to withstand both studio and live environments.

Build it yourself
As part of the Nu:Tekt series, the NTS-4 is delivered as a simple DIY kit. Once assembled, it becomes a durable performance mixer for long-term use.

Designed for compact rigs
The NTS-4 is designed to serve as the centerpiece of small hardware setups, reducing cable clutter and simplifying signal flows.

Specifications
Outputs
MAIN OUT L, R (6.3 mm mono jack, unbalanced)
Headphone output (3.5 mm stereo mini-jack, unbalanced)
SEND (3.5 mm stereo mini-jack, unbalanced)
Inputs
MONO 1, MONO 2 (3.5 mm mono mini-jack, unbalanced)
STEREO 1, STEREO 2, STEREO 3, STEREO 4 (3.5 mm stereo mini-jack, unbalanced)
RETURN (3.5 mm stereo mini-jack, unbalanced)
Other Connections
MIDI OUT (3.5 mm TRS)
USB port (USB Type-C)
Built-in Effects
SEND FX: Delay, Ping Pong Delay, Hall Reverb A, Hall Reverb B, Slap Reverb A, Slap Reverb B, Chorus
TOTAL FX: LPF, HPF, Isolator, Flanger, Phaser, Decimator, Drive, Distortion, Compressor, Limiter

Other
Display 3-digit 7-segment LED
Power Supply: USB bus power or AC adapter (DC 9 V, sold separately)
Power Consumption: 0.1 W at 230 V
Dimensions (W × D × H): 195 × 125 × 38 mm
Weight: 613 g

In the box
USB Type-C to Type-A cable
Precautions/Assembly Instructions
Accessories (sold separately)
AC adapter (DC 9 V)