YM_Mini USB Hardware Synth released!

My new YM_MINI synth is officially released!

This is a usb-powered software-midi controlled mini synthesizer circuits. It uses a virtual midi driver to fully control a real YM2149 chip in stereo.

The chip is most well known for its use in the Apple II Mockingbird soundcards and Atari ST computers. The YM or the chip from which it was derived (GI’s AY-3-8910) also created the music and audio in the Intellivision, Vectrex, some MSX systems, Sinclair ZX and Spectrum home computers, and many arcade machines.

(Audio Samples are half-way through the video).

The synth can be played via a live controller like monome or Oxygen8, or any midi-capable software such as Logic-Pro, Energy-XT, FL_Studio, Reaktor, Reaper, Max/MSP, PureData, Protrekkr, ztracker,  — pretty much anything that can sequence midi!

Instructions, additional info and usb-midi driver at:


The synth has 3 channels or square waves, a stereo noise channel, and a bizarre envelope generator for strange volume envelope effects. I’ve programmed it to work entirely via midi channels 1,2,3 & 10 (for noise), with the envelope and registers controlled via midi CCs. It has pitch-bend, and velocity control and uses a look-up table for fast pitch accuracy. So far tested to work on OS X and Windows with several software and hardware setups.

I’m currently selling 10 pre-built units to raise money for the kit pcb’s. They are available here:

10 Full built Units!

Pre-Sales of the kit can be ordered here, with an expected shipping in early May:

Pre-Sale YM_MINI Kits