Befaco VC ADSR
Compact voltage-controlled ADSR with state gates and curve shaping
8 HP Eurorack module
The Befaco VC ADSR is a compact voltage-controlled envelope generator offering individual CV control over each ADSR stage, state gate outputs for every envelope phase, and a curve control spanning linear to logarithmic/exponential response. It is a highly versatile and musical envelope module suited for both classic synthesis tasks and advanced modular patching techniques.
Features
- Voltage control over each ADSR stage via individual CV inputs
- Manual faders for Attack, Decay, Sustain, and Release stages
- State gate outputs for each envelope stage (Attack, Decay, Sustain, Release)
- Linear to logarithmic/exponential curve transition control potentiometer
- Trigger and Gate mode switchable via panel toggle
- Manual gate/trigger push button for hands-on envelope activation
- Gate/Trigger input indicator LED
- Individual ADSR stage indicator LEDs
- Envelope output range 0V to 10V
- State gate outputs range 0V to 10V
- Available in banana or mini-jack connector versions
- Compact 8HP format
Controls & Jacks (17)
- Envelope Output— Main envelope output, 0-10V range.
- Trigger/Gate Mode— Input for gate/triggers to activate and maintain envelope creation.
- Gate/Trigger Input Indicator LED— CV control for attack stage.
- Decay— Manual control of the decay stage duration of the envelope.
- Release— Manual control of the sustain stage level of the envelope. Note that sustain is a measure of level, not time.
- Decay CV Input— CV control for decay stage.
- Attack— Manual control of the attack stage duration of the envelope.
- Sustain CV Input— CV control for sustain stage.
- Attack State Gate Output— Gate signal during attack stage.
- Decay State Gate Output— Gate signal during decay stage.
- Sustain State Gate Output— Gate signal during sustain stage.
- Release CV Input— CV control for release stage.
- Release State Gate Output— Gate signal during release stage.
- Manual Gate/Trigger— Push button to manually activate and maintain envelope creation.
- Linear to Log/Exp Transition Control— Manual control to adjust the response curve between each stage of the envelope, from linear to logarithmic/exponential.
- TRIGG
- Sustain
How-To Guides
- Classic Gate Envelope for Melodic Synthesis
- Trigger Mode Pluck Sound
- State Gate Rhythmic Chaining
- Velocity-Responsive Attack via CV Input
- Sustained Drone with Manual Gate Control
- Percussive Envelope for Drum Synthesis
- Parallel CV Modulation of All Stages
- State Gate as Sequencer Reset Trigger
- Live Curve Morphing for Filter Sweeps
- Attack Gate as Sidechain Trigger
Explore the interactive VC ADSR panel on BleepDex — tap any control to learn what it does.