APC is a virtual re-creation of a popular DIY circuit the Atari Punk Console: a square wave synthesizer that creates fun “low-fi” sound, and comes with users MODs.
Also known as “Stepped Tone Generator”, published in 1980 by Forrest M. Mims III, the circuit consist of a frequency oscillator that drive a monostable which emits square output pulses. The circuit has become very popular in the DIY electronic music scene and now you can experiment it directly in your DAW.
*** Please note that this instrument is Windows compatible only. ***