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.

Feature highlights

• Square waves "low-fi" sound
• 8 users MODs available:
• Pitch up & down
• Highpass resonant filters
• Lowpass resonant filters
• LFO (syncable on BPM)
• Key tracking...
• Zero-delay-feedback state variable filters
• Gate MOD with hold function
• Users can submit new MODs online
• Preset manager, rename, copy, save, load...
• Full MIDI automation support
• Easy MIDI learn on all parameters
• Use 7-bit MIDI Continuous Controller or High resolution 14-bit MIDI NRPN and RPN
• Undo your changes with one click
• Comes with users manual
• Easy installer

• 1.2GHz CPU or higher with SSE2
• 512MB RAM or higher
• Microsoft® Windows® 8, 7, XP (SP2 or later), or Vista™
• 800x600px or higher
• VST™ 2 compatible host software
• Sound card with ASIO driver support recommended
• To use the automation a Host with automation features and for MIDI learn a MIDI interface and an external MIDI control device is required.