The Midium

teenage engineering's description of the teenage engineering EP-133 K.O. II sampler composer.


Meet the evolution of the world's most sold sampler. based on the legendary PO-33 K.O!, the new EP–133 K.O.II adds more power, more sampling capabilities, a fully reworked sequencer and brand new punch-in 2.0™ effects. introducing a workflow that lets you go from idea to TRACK faster than ever. it's pocket operators gone pro.

teenage engineering EP-133 K.O. II

EP–133 K.O. II is a powerful sampler, sequencer and composer. record sounds around you, sequence your samples and loops, tweak and automate filter, pitch and more. add stereo effects, compressor and next generation punch-in effects - go from idea to track faster than ever.

  • built-in mic and speaker
  • 6 stereo voices / 12 mono
  • 64 MB memory, or 999 sample slots
  • 6 built-in master FX and 12 punch-in fx
  • pressure sensitive keys and multifunctional fader
  • sampling frequency: 46 kHz / 16-bit
  • 1x stereo in/out, sync in/out, midi in/out and usb-c
  • powered by 4x AAA batteries, or via usb-c
  • dimensions: 240 mm x 176 mm x 16 mm
  • comes in a limited edition 10" collectors box


record sounds around you, sample your VOICE, favorite synthS, vinyl records or whatever audio that you've got on your phone.

teenage engineering EP-133 K.O. II mic and speaker

sequence your sample and loops.  make use of the curated selection of drums, bass, and keys that come pre-loaded on the K.O.II. 

tweak and automate things like filter, pitch, and more... add stereo effects, compressor and next generation punch-in effects.


vintage style keys with a modern touch,combining tactility with pressure sensitivity.
teenage engineering EP-133 K.O. II keys


  • 9 projects each with 80,000 notes
  •  projects contain 4 groups, each with 99 patterns
  •  patterns have 12 TRACKS for samples and MIDI
  •  variable pattern length per group (1 to 99 bars)
  •  12 mono / 6 stereo voice polyphony
  •  use groups to mix and match patterns on the fly
  •  record and automate all 12 fader assignments
  •  sequence in free time or quantized with swing 
  •  assign any pad to one of 16 MIDI channels
  •  loop mode from OB-4 with length AND slide

teenage engineering EP-133 K.O. II

  •  12 pressure and velocity sensitive pads
  •  world's first super segment hybrid display
  •  built-in mic and speaker
  •  usb-c
  •  midi in and midi out
  •  sync output and sync input
  •  audio input and audio output
  •  also runs on 4x AAA batteries
  •  instantaneous time correction and erase
  •  slice samples live or automatically
  •  stereo / mono sampling at 46.875 kHz / 16-bit
  •  punch-in 2.0™ effects (PRESSURE SENSITIVE)

teenage engineering EP-133 K.O. II screen

  •  arrange quickly using the instant commit feature
  •  32-bit float signal chain, 24-bit ADC / DAC
  •  sync io for external gear, 8th, 16th note or sync 24
  •  6 built-in send fx and a master compressor
  •  drag and drop samples using the sample tool