Stem Extractor

Browser tool that pulls aligned per-track WAV stems from an OP-XY using MIDI solo and recording

Stem Extractor repository on GitHub
Stem Extractor on GitHub.© gobelinor
Works with
  • OP-XY connected over USB (MIDI and audio)
Good to know
  • Heads up: The source carries a noncommercial license, so read its terms before any commercial use.

About

A browser-based tool for getting individual track stems out of a groovebox that only sends a stereo master over USB. It solos each track over MIDI while recording the audio, then gives you aligned per-track WAV files. This entry covers the OP-XY, and the project has a link for requesting other machines.

Devices
Platforms
Web
Pricing
free — Free to use; public source on GitHub under a noncommercial license.
License
Noncommercial (see LICENSE.md)
By
gobelinor
Last verified
Oct 18, 2026
Source: GitHub