TRKLS

Browser sample-library tool for TE devices: chop, chain and send samples to the EP-133, OP-1 and OP-Z

TRKLS web app device selection screen
TRKLS device picker.© TRKLS

About

A web app for building sample libraries for Teenage Engineering devices. It started with the OP-1, OP-1 field and OP-Z and was extended to the EP-133 K.O. II. Upload a batch of audio files, cut them up, reverse them, make sub-selections for quick sample chains, and rename them. On the EP-133 you can send them straight to the device and assign samples or slices to pads, adjusting the slices live. It works like the official sample tool, with an extra personal library you build up over time. A short tutorial is built in.

Devices
Platforms
Web
Pricing
free — Free web app; source public on GitHub (no license stated).
Last verified
Oct 18, 2026
Source: Reddit