intellijel/quad-vca
Quad VCA
Four-channel variable-response VCA with cascaded CV inputs and cascaded mix outputs. Features per-channel level control, CV attenuators, linear-to-exponential response sweep, boost switch, and normalled mixing.633
Capabilities 5
- Attenuatorattenuator
- Quad VCA — per-channel level knobs act as manual attenuators with no CV patched; also carries dedicated CV-attenuator knobs.
- Cascading Mixercascading-mixer
- Channel outputs are normalled down the chain; OUT4/MIX carries the four-channel mix when the other outputs are unpatched.
- Mixermixer
- Cascaded mix outputs allow the module to function as a four-channel mixer; OUT4/MIX serves as master mix output when other outputs are unpatched.633
- Quad VCAquad-vca
- Four fully-independent analog VCA channels with per-channel lin-exp response control and cascading mix outputs - the namesake quad VCA.633
- Voltage-Controlled Amplifiervca
- Four independent VCA channels with continuously variable linear-to-exponential response, cascaded CV inputs, and per-channel boost switch.633
Jacks 12 (8 in / 4 out)
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (8) | |||
| CV1 | cv | — | CV input for controlling the level of channel 1. A +5V input with attenuator fully clockwise, response fully linear, and LEVEL fully CCW results in approximately unity gain.633 |
| CV2 | cv | — | CV input for controlling the level of channel 2. If nothing is connected, CV is taken from CV1.633 |
| CV3 | cv | — | CV input for controlling the level of channel 3. If nothing is connected, CV is taken from CV2.633 |
| CV4 | cv | — | CV input for controlling the level of channel 4. If nothing is connected, CV is taken from CV3.633 |
| IN1 | mixed | — | 633 |
| IN2 | mixed | — | 633 |
| IN3 | mixed | — | 633 |
| IN4 | mixed | — | 633 |
| Outputs (4) | |||
| OUT1 | mixed | — | 633 |
| OUT2 | mixed | — | Signal output for channel 2. If nothing is connected, the output is mixed into OUT3.633 |
| OUT3 | mixed | — | 633 |
| OUT4/MIX | mixed | — | Signal output for channel 4. If the other three OUT jacks are left unconnected, this jack functions as the output of a 4-channel mix.633 |
Parameters 16
| Name | Type | Range | Behavior |
|---|---|---|---|
| BOOST 1 | switch | — | Left position (disabled): maximum linear gain is approximately unity (1:1) when LEVEL is fully CW or +5V is applied to CV. Right position (enabled): signal is boosted by around +6dB (2:1).633 |
| BOOST 2 | switch | — | 633 |
| BOOST 3 | switch | — | 633 |
| BOOST 4 | switch | — | 633 |
| CV Attenuator 1 | knob | — | Controls the amount of CV modulation sent to control channel 1's level. Because the CV inputs cascade, if there is no CV input on the channel but a preceding channel has a CV input, this knob will bring up that previous channel's CV signal.633 |
| CV Attenuator 2 | knob | — | 633 |
| CV Attenuator 3 | knob | — | 633 |
| CV Attenuator 4 | knob | — | 633 |
| LEVEL1 | knob | — | Sets the base level (bias) of channel 1. Can be used to set a default signal level through the VCA, then adjusted via CV.633 |
| LEVEL2 | knob | — | Sets the base level of channel 2.633 |
| LEVEL3 | knob | — | Sets the base level of channel 3.633 |
| LEVEL4 | knob | — | Sets the base level of channel 4.633 |
| Response 1 | knob | — | Controls the VCA response curve. Fully CCW is exponential; fully CW is linear. In-between provides a continuously variable blend between the two extremes.633 |
| Response 2 | knob | — | 633 |
| Response 3 | knob | — | 633 |
| Response 4 | knob | — | 633 |
Firmware history 0 versions
No firmware history recorded.
References 2
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[633]
Intellijel Quad VCA Manual (2021-08-02)manual● verified 2026-05-21
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[634]
Intellijel Quad VCA product pageproduct_page⚠ verified 2026-05-21 · manufacturer changed since last verified