AudioBatchConverter (K.O. II sample tool)

Desktop tool that speeds up, downsamples and trims samples to save K.O. II memory

AudioBatchConverter GitHub repository
AudioBatchConverter on GitHub.© JanSchulten

About

A small desktop app for preparing samples for the EP-133 K.O. II. Drop samples in and get them back at double speed, so they take half the memory and can be pitched back down on the device. It also downsamples, converts formats, folds stereo to mono and trims, in a K.O. II-styled interface. Release builds bundle ffmpeg, so there's nothing else to install.

Devices
Pricing
free — Public source on GitHub; no license stated.
By
JanSchulten
Last verified
Oct 18, 2026
Source: Reddit