4 A-R enveloppes

A special collaboration module, featuring the HEXINVERTER.NET attack/release design. Four simple envelope generators. Great for adding articulation to percussive and other drum sounds or varying cutoff frequency over time. By pulling out the release knob on channels 1 and 3, those EGs will output a negative voltage.

http://dev.analogcraftsman.com/?product=quad-ar#tab-description

• ? mA +15V
• ? mA -15V
• ? mA 5V

No info about availability.