Intellijel Dual ADSR
Dual slider-based ADSR envelope generator
14 HP Eurorack module
Classic ADSR envelope generator with slider-based control that captures the feel of vintage synthesizers. Features dual independent envelopes with gate normalling for synchronized or independent operation, plus cycle mode for unipolar LFO functionality. The slider interface provides intuitive, tactile control over envelope shaping.
Features
- Dual independent ADSR envelopes
- Slider-based control interface
- Gate normalling between envelopes
- Three rate ranges (Fast/Med/Slow)
- Cycle mode for LFO operation
- Retrigger inputs
- Level control inputs with built-in VCA
- EOD (End of Decay) gate outputs
- Inverted outputs
- Manual gate buttons for testing
Controls & Jacks (31)
- RATE 1 — LED indicator showing the current position of the Rate 1 time range switch (Fast/Med/Slow).
- Cycle 1 — Toggles cycle (looping) mode for envelope 1. When enabled, the envelope automatically retriggers after completing its decay phase, turning i
- Cycle 1 — On/Off switch enabling cycle mode for envelope 1. When ON, the envelope loops continuously, functioning as a shaped LFO whose waveshape is s
- Sustain 1 — Sets the held voltage level of envelope 1 while the gate remains high, after the decay phase completes. Fully down = 0V (percussive), fully
- Release 1 — Controls how long envelope 1 takes to fall from the sustain level back to 0V after the gate goes low. Slider up = longer release tail.
- Cycle 1 — EOD (End of Decay) indicator for envelope 1. Lights up when the decay phase completes and the envelope enters sustain, useful for monitoring
- Decay 1 — Controls how long envelope 1 takes to fall from peak level down to the sustain level after the attack phase completes. Slider up = longer de
- Attack 1 — Controls the rise time of envelope 1 from 0V to peak level when a gate is received. Slider up = slower attack. Ranges depend on the Rate swi
- Cycle 2 — On/Off switch enabling cycle mode for envelope 2. When ON, the envelope loops continuously, functioning as a shaped LFO whose waveshape is s
- RATE 2 — LED indicator showing the current position of the Rate 2 time range switch (Fast/Med/Slow).
- Rate 2 — Toggles cycle (looping) mode for envelope 2. When enabled, the envelope automatically retriggers after completing its decay phase, turning i
- Rate 2 — Three-position switch setting the time range for envelope 2. Fast: max ~1-2.5s per stage. Med: max ~10s. Slow: max ~60s. Affects attack, dec
- Decay 2 — Controls how long envelope 2 takes to fall from peak level down to the sustain level after the attack phase completes. Slider up = longer de
- Sustain 2 — Sets the held voltage level of envelope 2 while the gate remains high, after the decay phase completes. Fully down = 0V (percussive), fully
- Attack 2 — Controls the rise time of envelope 2 from 0V to peak level when a gate is received. Slider up = slower attack. Ranges depend on the Rate swi
- Release 2 — Controls how long envelope 2 takes to fall from the sustain level back to 0V after the gate goes low. Slider up = longer release tail.
- Cycle 2 — EOD (End of Decay) indicator for envelope 2. Lights up when the decay phase completes and the envelope enters sustain, useful for monitoring
- Rate 1 — Three-position switch setting the time range for envelope 1. Fast: max ~1-2.5s per stage. Med: max ~10s. Slow: max ~60s. Affects attack, dec
- Retrig 1 — Retrigger input for envelope 1. A trigger pulse here resets the envelope to zero and restarts the attack phase, even while the gate is still
- ENV 1 Inv — Inverted envelope 1 output. Outputs the negative (flipped) version of the envelope, useful for ducking effects, inverted filter sweeps, or s
- EOC 2 — End of Cycle output for envelope 2. Fires a trigger pulse when the full ADSR cycle completes (end of release phase), useful for chaining env
- ENV 1 Out — Main envelope 1 output. Outputs the positive ADSR envelope voltage, typically 0-8V, scaled by the Level input.
- EOC 1 — End of Cycle output for envelope 1. Fires a trigger pulse when the full ADSR cycle completes (end of release phase), useful for chaining env
- ENV 2 Out — Main envelope 2 output. Outputs the positive ADSR envelope voltage, typically 0-8V, scaled by the Level input.
- ENV 2 Inv — Inverted envelope 2 output. Outputs the negative (flipped) version of the envelope, useful for ducking effects, inverted filter sweeps, or s
- Level 2 — Level CV input for envelope 2, normalled to +5V. Controls the overall output amplitude of the envelope via a built-in linear VCA. Patch a CV
- Retrig 2 — Retrigger input for envelope 2. A trigger pulse here resets the envelope to zero and restarts the attack phase, even while the gate is still
- CV 1 — Level CV input for envelope 1, normalled to +5V. Controls the overall output amplitude of the envelope via a built-in linear VCA. Patch a CV
- Gate 1 — Gate input for envelope 1. Rising edge starts the attack phase; the envelope sustains while the gate is high. Falling edge triggers the rele
- CV 2 — Level CV input for envelope 2, normalled to +5V. Controls the overall output amplitude of the envelope via a built-in linear VCA. Patch a CV
- Gate 2 — Gate input for envelope 2. Rising edge starts the attack phase; the envelope sustains while the gate is high. Falling edge triggers the rele
How-To Guides
- Cascading Envelope Arps
- Morphing Filter Sweeps
- Rhythmic Amplitude Gates
- Stereo Panning Movement
- Glitch Stutter Effects
- Cinematic Tension Builder
- Organic Breathing Pads
Explore the interactive Dual ADSR panel on BleepDex — tap any control to learn what it does.
