KORG NTS-4 Mixer

KORG NTS-4 Compact performance mixer for modern synth setups

NTS-4 is a flexible and powerful mixer in the Nu:Tekt series. With six channels, integrated effects, and USB audio/MIDI, it is designed to sum, mix, and perform with volca units, NTS instruments, modular synths, and other synthesizers in a unified setup.

Six channels – one unified setup

With four stereo channels and two mono channels, NTS-4 makes it easy to combine multiple instruments in a single rig, supporting up to ten audio signals. Each channel includes level control, mute, CUE monitoring, and FX send for flexible mixing and control. All inputs use 3.5 mm mini-jacks, adapted for volca units, NTS instruments, and other synth equipment.

Designed for synthesizers and modular synths

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

Shape your mix in real time

Two independent stereo effect 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 sounds in headphones before bringing them into the mix, or create quick transitions with direct muting.

Seamless connection to 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 over USB can be routed to external equipment via MIDI OUT. Standard 1/4" outputs provide connection to studio and live systems.

Compact, stable, and built for long-term use

The steel construction provides stability even in setups with many cables. Despite its size, NTS-4 is built to handle both studio and live environments.

Build it yourself

As part of the Nu:Tekt series, 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

NTS-4 is developed to be the center of small hardware setups, reducing cable routing and simplifying signal flow.

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: 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