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Cassette Keys.01
One Shot drum samples used in audio demos are from Influential Kit and drum & percussion loops are from Break Geek DNB. All other sounds are from Cassette Keys.01.


  • Kontakt version:
    • Full version of Kontakt 5.5.2 (or higher) is required - you can load this instrument in Kontakt Player but it'll work only for limited time.
  • Ableton Live 9 version:
    • Full version of Live 9.7 (or higher) is required.
  • Logic version:
    • Full version of Logic 9.1.8 (or higher) is required.
  • SFZ version:


Kontakt 5 version

Cassette Keys 01 - Kontakt 5


Ableton Live 9 version

Cassette Keys 01 - Ableton Live 9


Logic version

Cassette Keys 01 - Logic


SFZ version

Cassette Keys 01 - SFZ


Cassette Keys.01


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Update 1.1

  • Kontakt version:
    • Added "Sample Start" knob (mapped to Mod Wheel)
    • Added "Master Out" knob
    • Better RAM management
  • New formats available (details below):
    • Ableton Live 9 version
    • Logic version
    • SFZ version
    • Multiformat

Quick video showing "Sample Start" knob in action:

The Idea & Process

It's a unique mixture of physical modelling and fm synths recorded on a cassette with an old & wonky cassette recorder. It has a range from C0 to E6 and 4 carefully designed velocity layers. The GUI is very simple (Kontakt version), yet useful and almost synth-like - so just like its predecessor Cassette Piano, it’s very easy and fun to work with. Feel free to check out the introduction video's to hear and see it in action:

Kontakt version:

Ableton Live 9 version:

Every note of this instrument has been carefully denoised with a high quality algorithm to avoid noise stacking when playing more than one note. Noise can still be added with the noise slider - it’s much more flexible this way and allows the ability to adjust the volume of the noise independently whilst also applying parameters such as filtering. It also creates a more realistic sound, so when playing a five voice chord, only one sample of noise instead of five stacked on top of each other will be heard.

The End Result

Useful and fun production tool

If you like vintage sounds and you're looking for something to enhance your production toolbox, then this product will be for you.

Simple, one page interface (Kontakt version only)

Everything is laid out on one page allowing fast sound design possibilities.

Simulated Round Robin (Kontakt version only)

Makes notes sound realistic when played ostinato (even when playing fast) - check out the introduction video to hear it in action.

Variety of sounds

With this instrument you can easily create some weird sounds and there are already 30 presets included (Kontakt & Ableton Live 9 only) to get you started.


  • Kontakt version:
    • Full version of Kontakt 5.5.2 (or higher) required
    • 848 MB of samples (452 MB after lossless Kontakt compression)
    • Editable "Sample Start" parameter (mapped to Mod Wheel)
    • Simulated round-robin
    • REV (reverse) mode
    • Mono mode
    • 4 velocity layers
    • One-page interface for easy and fast sound design
    • 30 presets
  • Ableton Live 9 version:
    • Full version of Live 9.7 (or higher) required
    • 848 MB of samples (366 MB after lossless Live compression)
    • Editable "Sample Start" parameter
    • REV (reverse) mode
    • 4 velocity layers
    • 30 Instrument Racks (presets) with mapped macros
    • Custom Effect Racks
  • Logic version:
    • Full version of Logic 9.1.8 (or higher) required
    • 848 MB of samples
    • Editable "Sample Start" parameter (mapped to CC1 / Mod Wheel)
    • REV (reverse) mode
    • 4 velocity layers
    • 5 presets
  • SFZ version:
    • Compatible with free SFZ player: Plogue Sforzando
    • 848 MB of samples
    • Editable parameters:
      • Volume
      • Volume Envelope
      • Panorama
      • Vibrato Amount (mapped to CC1 / Mod Wheel)
      • Vibrato Speed
      • LP FIlter Cutoff & Resonance
      • HP Filter Cutoff & Resonance
    • 4 velocity layers
    • 1 preset

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