Chroma: Harmonically sweeten your sound. Collaboration between Xynth Audio and Nasko.

Chroma Screenshot


For a general overview of Chroma, visit the product page.

  • To reset any control, double-click it or right-click it and choose RESET.
  • To check for updates or view the about screen, click the Xynth Audio logo on the top-right.

Basic Controls

Chroma basic controls
  1. Bypass plugin.
  2. Open/close settings menu.
  3. View about or check for updates.


Chroma visualizer


Hovering the cursor over the visualizer area will reveal additional controls.

Chroma visualizer controls
  1. Mute side-bands.
  2. Adjust affected frequencies.


Visualizer visuals example

The visualizer displays a real-time spectrum of the signal from 100Hz to 6kHz. The brighter the vertical line, the larger the magnitude of the corresponding frequency.

  • The DRY or purple frequencies represent the unchanged input or dry signal. If Chroma is not meaningfully changing the signal, then all active frequencies should appear as DRY.
  • The TUNED or blue frequencies represent the frequencies that have been moved or shifted as a result of Chroma's processing. If TUNED frequencies are visible, then neighboring DRY frequencies have been shifted to these new locations.


In the example screenshot above, Chroma is set to the E-minor-pentatonic scale. The input signal is a rhodes piano playing the note F. Since F is not in the selected scale, the frequencies are shifted down by a semitone to the note E.

The DRY (purple) frequencies represent the note F while the TUNED (blue) frequencies represent the note E.

Main Controls

These are the main controls for adjusting Chroma's processing.

Visualizer main controls
  1. Toggle MIDI input mode. For more details, visit the MIDI routing guide.
  2. Open/close the Key Select window.
  3. Color acts as a dry/wet mix from 0-100, while values 100-200 introduce additional filters to further resonate in-key frequencies.
  4. Manual key select. Click on the keyboard to manually enter a key.
  5. 0-Latency/High-Quality toggle. High Quality introduces latency but usually results in less artifacts.

Key Select

To improve the workflow of using Chroma, the KEY SELECT window provides a simple way to quickly select a key.

To use this window,

  1. Select a root note.
  2. Select a scale.
Key select

Root Note

Key select root note
  1. Clicking on the text will open a dropdown menu to select a note. The scroll-wheel and the arrows on the side allow for quick adjustment of the note.
  2. The mini keyboard layout provides an alternative way to select the root note. Simply click on the desired note to select it as the root note.


Key select root note
  1. Right-click the text to open the scales.json file. This file contains all the available scales. Feel free to modify this file in order to add custom scales! When modifying this file, be sure to close then reopen the Chroma interface to see the changes.
  2. Choose a scale from available list of scales.
  3. Some scales have minor/major variants, which can be toggled here. Holding the 'shift' key while clicking will switch to the relative version of the scale.


Chroma basic controls
  1. Pitch shifts the incoming signal by the selected amount before any other processing, affecting only the active frequency region. Useful for atonal signals to try and hit a "sweet spot" where the processing sounds the best.
  2. Shifts the tuning of Chroma, functioning as a more traditional fine-tune control for the processing.
  3. Adjusts the gain of the processed region of frequencies.