erica-synths/pico-lpg
Pico LPG
Erica Pico LPG is a vactrol-based Low Pass Gate inspired by classic Don Buchla LPG designs, featuring VCA and VCF modes, configurable resonance via back-of-module jumper, and a built-in decay envelope generator.454
Capabilities 4
- Envelope Generatorenvelope-generator
- Built-in decay envelope generator with trigger input and Decay time control.454
- Lowpass Gatelowpass-gate
- Vactrol-based Low Pass Gate with VCA and VCF modes, inspired by Don Buchla LPG designs.454
- Vactrol-basedvactrol
- Uses vactrols for the characteristic LPG sound.454
- Voltage-Controlled Amplifiervca
- Panel-selectable VCA mode in addition to VCF mode.454
Jacks 3
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (3) | |||
| CV | cv | -10V to 10V | VCF cutoff / VCA bias CV input. External CV is mixed with the internal envelope for combined modulation.454 |
| IN | audio | — | Audio signal input. Accepts up to 10Vptp without clipping.454 |
| TRIG | trigger | — | Trigger input to initiate the built-in decay envelope. An LED provides visual feedback on the envelope generator output voltage.454 |
Parameters 4
| Name | Type | Range | Behavior |
|---|---|---|---|
| BIAS/CUTOFF | knob | — | Manually adjusts VCF cutoff frequency or VCA bias. Incoming CV is summed with the knob setting.454 |
| DECAY | knob | ≤350ms | Sets the decay time of the built-in envelope generator, up to a maximum of 350 ms.454 |
| MODE | switch | — | Selects between VCF and VCA operating modes.454 |
| Resonance Jumper | jumper | — | Back-of-module jumper that configures resonance. Default (no jumper) = resonant VCF. Installing the jumper = non-resonant VCF, closer to the original LPG sound.454 |
Firmware history 0 versions
No firmware history recorded.
References 2
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[455]
Erica Synths Pico LPG product pageproduct_page⚠ verified 2026-05-17 · manufacturer changed since last verified