Intellijel Quad VCA
Four VCAs with cascaded CV and mixing
12 HP Eurorack module
The Intellijel Quad VCA is a versatile four-channel variable response VCA with cascaded CV inputs and mixing outputs. It goes beyond simple amplitude control, featuring continuously adjustable linear-to-exponential response curves per channel and a boost switch for subtle overdrive or level boosting. The cascaded design allows creative patching configurations from independent VCAs to complex mixers.
Features
- Manual LEVEL control per VCA with CV bias capability
- Dedicated CV attenuators with dual-color LEDs for bipolar CV monitoring
- Continuously adjustable linear to exponential response per VCA
- Cascaded CV inputs (normalled to adjacent channels)
- Cascaded mix outputs with OUT 4 as master mix
- BOOST switch per channel (+6dB/2:1 gain increase)
- Dual-color CV LEDs (green for positive, red for negative voltages)
Controls & Jacks (32)
- Boost 2 — Enables +6dB boost for channel 2.
- CV Attenuator 1 — Controls amount of CV modulation for channel 1. Cascades from previous channel if no CV patched.
- Level 1 — Sets base level/bias of channel 1 VCA. CW = approx +5V. Summed with CV input.
- CV LED 1 — Red/green LED showing post-attenuator CV level. Green = positive, red = negative.
- Response 1 — Linear/exponential response curve. CCW = exponential, CW = linear.
- CV 2 — input cv
- Boost 4 — Enables +6dB boost for channel 4.
- CV Attenuator 2 — Controls amount of CV modulation for channel 2.
- Level 2 — Sets base level/bias of channel 2 VCA.
- CV LED 2 — Red/green LED showing post-attenuator CV level.
- Response 2 — Linear/exponential response curve for channel 2.
- CV 3 — input cv
- Boost 3 — Enables +6dB boost for channel 3.
- CV LED 3 — Red/green LED showing post-attenuator CV level.
- Level 3 — Sets base level/bias of channel 3 VCA.
- CV Attenuator 3 — Controls amount of CV modulation for channel 3.
- CV 1 — input cv
- Response 3 — Linear/exponential response curve for channel 3.
- Boost 1 — Enables +6dB boost (2:1 gain) when switched on.
- CV LED 4 — Red/green LED showing post-attenuator CV level.
- Level 4 — Sets base level/bias of channel 4 VCA.
- CV Attenuator 4 — Controls amount of CV modulation for channel 4.
- Response 4 — Linear/exponential response curve for channel 4.
- CV 4 — input cv
- In 3 — input audio
- In 1 — input audio
- In 4 — input audio
- In 2 — input audio
- Out 1 — output audio
- Out 4 — output audio
- Out 2 — output audio
- Out 3 — output audio
How-To Guides
- Quadraphonic Ambient Wash
- Polyrhythmic Gate Sequencer
- Tremolo Cascade Organ
- Crossfading Texture Morph
- FM Index Crossfade Controller
- Euclidean Polyrhythm Mixer
- Stereo Field Animator
Explore the interactive Quad VCA panel on BleepDex — tap any control to learn what it does.
