KorgSynths
Build-it-yourself programmable synth kit with logue SDK oscillator and effect slots
The NTS-1 digital kit is a synthesizer kit from Korg's Nu:Tekt line that is assembled with the included tool and needs no soldering. It has one monophonic digital oscillator based on the Multi-Engine of the prologue and minilogue xd, a multimode filter, one envelope and three LFOs, and three stereo effect sections for modulation, delay and reverb. An arpeggiator and an audio input are built in, and it is powered over USB.
This entry covers the original NTS-1 digital kit; the mkII has its own entry. Custom firmware images are not known. What the community builds are user units made with the logue SDK: custom oscillators and modulation, delay and reverb effects (.ntkdigunit files, which are zip archives). Korg's Librarian page lists 16 oscillator slots, one of them holding the factory Waves oscillator. Units built with SDK 1.1-0 need system firmware 1.02 or later. They are loaded with Korg's NTS-1 Librarian application (drag the unit onto its list and send) or the logue-cli command line tool, and run alongside the stock firmware rather than replacing it. The NTS-1 is monophonic, so polyphonic units written for the prologue or minilogue xd may behave differently. Korg also maintains a repository of hardware customization files and Arduino custom panel code for this model.
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Free or donation NTS-1 units by Nick Standing (JabunAudio): NOISE, a white noise oscillator, and the TapeFX Collection of six tape slow and stop delay effects based on DOTEC-AUDIO's StopFX.
| Version | Date |
|---|---|
| TapeFX Collection 1.0 | 2026-06-03 |
| NOISE 1.0 | 2021-05-06 |
Free oscillators by Tweeeeeak! for the NTS-1 and NTS-1 mkII: RoaR random sound and sequence generator, ROAT, J6 chord player, Proba-B probability sequencer and a Volca Bass style triple oscillator.
by Tweeeeeak!
| Version | Date |
|---|---|
| roar.1.01 | 2025-12-21 |
| roat.2.01 | 2025-12-06 |
| roat.1.02.51 | 2024-12-05 |
| ntsmk2.1.0.0 | 2024-12-01 |
Rhythm generator oscillator for the NTS-1 and NTS-1 mkII: 16-step random patterns, three-voice polyphony from a bank of 12 samples, triggered by pressing notes or running the arpeggiator.
by Jacob Ulmert
Glitchy drum machine oscillator for the NTS-1 that fits 8-bit and 12-bit samples into about 20 kB and maps them in combinations for limited polyphony.
by Jacob Ulmert
Three open NTS-1 units: a 12-voice chord oscillator that picks major or minor chords by key, an 808-style bass oscillator, and a distortion and clip mod effect.
Open collection of NTS-1 units: fm4o 4-operator FM and mass multi-saw oscillators, the sola Solina chorus, and the rock phaser delay effect, built with Docker.
| Version | Date |
|---|---|
| 1.0 | 2024-08-20 |
Open collection of custom effects by dukesrg for the NTS-1, minilogue xd and prologue: Crusher, Gator, Hyper, Kompressor, Looper, Vibrator, LFO and Delay BPM, built from one wrapper header for all effect slots.
| Version | Date | Notes |
|---|---|---|
| v1.4 | 2021-05-20 | Hyper, LFO and Vibrator fixes. |
Open collection of custom oscillators by dukesrg for the NTS-1, minilogue xd and prologue, including Supersaw, FastSaw, Morpheus wavetable, FMxx 4/6-operator FM with DX7 banks, and Anthologue.
| Version | Date | Notes |
|---|---|---|
| v.1.0 | 2022-11-06 | Release titled Saws. |
NTS-1 oscillator that generates lo-fi forest ambience with pan flute and claves, meant to run from a latched arpeggiator.
by Jacob Ulmert
Two-oscillator multi oscillator for the NTS-1 with sine, saw, parabola and square waves, adjustable interval between the oscillators and pulse width control.
Docker-based build setup and small effects for the NTS-1 and minilogue xd: simplepan, distortion, clipper, overdrive, pitch shift, tremolo and others, plus a pick of units from Korg's index.
JP-8000 style super-saw oscillator for the NTS-1 with a detune curve from published research, two chord-tunable secondary oscillators, ring modulation, phase drift and an LFO.
by Graham Keane
Korg's official hardware customization repository for the NTS-1 digital kit: custom panel reference board data with schematics, KiCad project, Gerbers, BOM and Arduino libraries.
by KORG Inc.
| Version | Date |
|---|---|
| ArduinoBoards/1.0.1 | 2020-02-14 |
| ArduinoBoards/1.0.0 | 2020-01-14 |