EP-133 K.O. II

SampleStack supported

Teenage Engineering

A pocket sampler with 12 pads, punch-in effects, and browser-based sample management.

Format

Standalone

Sample Rate

46.875 kHz

Bit Depth

16-bit sampling, 32-bit float signal chain

Channels

Mono or Stereo

File Formats

WAV (via web tool)

Storage

Internal only (128 MB)

Specifications

Polyphony 16 mono or 12 stereo voices
Memory 128 MB

Features

  • Up to 999 sample slots
  • 12 pressure/velocity-sensitive pads
  • 4 groups x 12 patterns sequencer
  • 6 master FX, 12 punch-in FX
  • Built-in mic, line in/out, built-in speaker
  • Sync in/out, MIDI in/out
  • Power: 4x AAA or USB-C

Transfer Method

Browser-based EP Sample Tool (teenage.engineering/apps/ep-sample-tool) via USB-C. Communication uses MIDI SysEx.

Notes

  • No SD card slot and no USB mass storage mode
  • All sample management through the browser-based EP Sample Tool
  • Native sample rate: 46,875 Hz. Lower rates preserved for lo-fi
  • Backup/restore individual projects as archive files
  • In SampleStack, create an EP-133 K.O. II collection as a staging folder. It checks samples against the native 46.875 kHz / 16-bit format, converts them, and counts slots used out of 999. Then drag the files into the sample tool.

Preparing samples for the EP-133 K.O. II

The Teenage Engineering EP-133 K.O. II has no card and no USB mass storage. Everything moves through the browser-based EP Sample Tool over USB-C, which talks to the unit using MIDI SysEx, into 128 MB of internal memory across up to 999 slots. It samples at 46.875 kHz, 16-bit, and lower rates are kept for deliberate lo-fi.

The browser tool works, but fixing file rates and depths one at a time inside it is slow. In SampleStack you build an EP-133 collection as a staging folder: it checks samples against the native 46.875 kHz, 16-bit format, converts them, and counts slots used out of 999, so you drag a ready set into the sample tool.

Third-Party Tools

  • ep_133_sample_tool (community command-line tool)

Links

Frequently Asked Questions

What sample format does the EP-133 K.O. II use?

It samples at 46.875 kHz, 16-bit, into 128 MB of internal memory. There is no SD card; samples transfer through the browser-based EP Sample Tool over USB-C.

How does SampleStack help with the EP-133 K.O. II?

SampleStack prepares and converts samples to a clean rate and depth before you load them with the EP Sample Tool, so you spend less time fixing files in the browser.

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