Teenage Engineering Releases EP-133 K.O. II OS 2.0 “Champions Update”
Teenage Engineering has dropped a powerful new firmware update for the EP-133 K.O. II, dubbed the “Champions Update (OS 2.0)”, and it brings a suite of major enhancements that expand both creativity and control for users of this already-iconic portable sampler.
Resampling Arrives
One of the biggest features in OS 2.0 is resampling, now available both in mic/line-in mode and internally while working within sample mode. You can now:
- Choose between mono or stereo resampling sources
- Apply effects (like reverb) to a sample and then resample it to create a “wet” version while preserving the original
- Use hands-free resampling by pressing Shift + Pad, enabling a performance-friendly workflow
Chords & Polyphony
The update introduces a 16-voice polyphony engine, a major leap from previous limitations. Combined with hands-free sampling, this means you can now:
- Trigger multiple pads simultaneously to play chords
- Record and resample those chords into a new pad seamlessly
Sample a Pattern with Fixed Length
You can now resample beats with a fixed length:
- Hold Shift and Pad to arm resampling to that pad
- Use Plus/Minus to select how many bars to capture
- Press Play to launch the sequencer and automatically record a perfect loop
Hands-Free Sampling via Threshold
Sampling just got smarter. You can now:
- Set a threshold with the Y knob
- Begin recording automatically when audio passes the threshold — ideal for mic-in captures or live one-takes
Song Mode
A full song mode is now available, letting you chain scenes into full arrangements:
- Press Main + Enter to enter song editing
- Use Shift + A/C/D to add, cut, or insert positions
- Scene changes are controlled via Shift + Plus/Minus
- Start playback from anywhere or from the beginning
- A handy visual indicator using the X and Y levels shows song progress on-screen
MIDI and Sidechain Support
OS 2.0 also refines MIDI functionality:
- Proper MIDI configuration, pitch bend support, and MIDI thru
- Sidechaining can now be added via Output settings:
- Adjust length and shape of the sidechain envelope
- Assign which pads trigger sidechaining
- Apply the effect to specific groups via Shift + selection
With OS 2.0, the K.O. II evolves from a portable groovebox into a mini-production powerhouse, now capable of layered arrangements, dynamic resampling workflows, and deeper MIDI and mix control. It’s a love letter to the sampling community — and a solid reason to revisit or invest in the EP-133.
Watch the full update demo here:
https://www.youtube.com/watch?v=_QKr06470xU
