microGranny 2 is monophonic granular sampler. It reads wav samples from microSD card and applies granular algorithms to them. You can also adjust start, end, sample rate (tuned or free run), crush and envelope (attack release). MIDI Input allows external control of all parameters as well as transposition of the samples, or playing individual grains by different keys.


Are there any differences in software amongst Limited Editions?
Limited Edition Grannies were sold with different versions of software, as its was reaching its final version. Since first version of MG2  came out, we updated the software several times. The software gets better and better thanks to your feedback! (Big thanks! <3 ) Anyway, It is possible to update your Atmega microcontroller with newest arduino software posted on our GitHub. But we know that not all of current MG2 users own a programmer and can handle the update on their own. So we decided that every owner of limited edition MicroGranny can get new Atmega microcontroller loaded with finished, fully stable and bugless software for free right HERE.


  • monophonic mono sampler
  • microSD card (storing + recording samples, storing presets)
  • 6 sounds with full adjustments storable in a preset at once
  • 60 presets in 10 banks (6 preset per bank), stored as .txt files on microSD card
  • wav sample playback from microSD card (mono, 22050 Hz, 8 or 16 bit, two letter file name)
  • 8-bit 22050Hz wav recording via line input or onboard microphone
  • hold button
  • sample rate (tuned or free run)
  • crush
  • start, end position with repeat, instant loop
  • granular settings: grain size and shift speed (positive or negative)
  • amplitude envelope attack and release
  • MIDI Input – responds to note, cc and clock (synchronize loop and grains)
  • MIDI side chain envelope restart
  • copy, paste
  • input & output volume knob
  • power switch – plug / battery
  • hackable – arduino based