The Boundary is a multi-function cycling slew and four quadrant VCA. Features: LFO and modulation oscillator (from cycles measured in minutes to high audio rate) Slew input can be used with gate signals for attack-release envelope Trig input can be used for attack-decay envelope Slew input can also be used as portamento for v/oct signals Rectify input has a full wave rectifier to act as a high quality envelope follower Trig input can also be used for voltage controlled frequency division at clock or audio rate Bound input allows for unique bouncing ball effects and combined AM/FM modulation EOR output can be used for gate/trigger delay Soft limiter on the VCA output allows for taming or distortion of wild signals Four quadrant VCA allows for ring modulation Video: https://youtu.be/tH5f8eyGW_UProduct Specs Item Number: 19725 Make: Schlappi Engineering Model: Boundary - Black Condition: Brand New Finish: Black Categories: keyboards-and-synths ⇒ eurorack Function: Clock Modulator Envelope Follower Envelope Generator LFO Oscillator Ring Modulator Slew Limiter VCA Made In: United States MPN: SE-BOUNDBLK Modular Grid: Eurorack ⓘ + Dimensions*: 12 HP 25 mm deep Power*: 112 mA +12V 59 mA -12V ? mA 5V * User contributed details