Teenage Engineering KO II Sampler Updated with USB Audio, Lo-Fi Modes, and Enhanced Sampling Capabilities

Teenage Engineering has released OS 2.5, a major update for its $329 EP-133 KO II sampler that introduces several significant new features.

The update adds audio over USB connectivity, selectable sample rates including lo-fi options at 32 kHz and 26 kHz, sample reverse functionality, an arpeggiator, equal-length autochopping, and extends maximum sample length from 20 seconds to 40 seconds when capturing mono audio instead of stereo.

Sample reverse addresses a basic but previously missing feature, while the arpeggiator enhances the device’s ability to repitch samples, enabling users to create synthpop-style basslines more easily. The combination of longer sampling time and equal-length autochopping significantly improves the KO II’s sample chopping and rearrangement capabilities, particularly for melodic content.

The new selectable sample rate feature allows users to choose between standard 46 kHz or engage lo-fi modes, with 32 kHz adding subtle character and 26 kHz delivering a deliberately crunchy, digital sound. Additional improvements include enhanced time stretching, new musical scales, per-pad time shifting, and numerous bug fixes.

OS 2.5 is also available for the KO II’s reggae-themed counterpart, the EP-40 Riddim. Interestingly, the EP-1320 Medieval sampler receives only USB audio support in its update, with Teenage Engineering yet to explain why this model is regularly excluded from broader feature updates.

Users can download the latest firmware updates for the KO II, Riddim, and Medieval sampler through the official Teenage Engineering platform.

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