bastl-instruments/skis-ii
Skis II
Dual voltage controlled decay envelope with dual linear VCA. Each channel has an exponential decay envelope normalized into a linear VCA. Envelopes can be configured as release envelopes via jumper.448
Capabilities 2
Jacks 8 — 6 in / 2 out
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (6) | |||
| DECAY CV IN A | cv | ≤5V | Sets decay time by CV. Full range of the decay knob can be achieved with a 5V signal. By default, CV adds to knob position; can be reconfigured so knob acts as attenuator when cable is inserted.448 |
| DECAY CV IN B | cv | ≤5V | 448 |
| TRIGGER A | trigger | — | Initiates the decay envelope (attack ~2ms). Can work in trigger (decay) or gate (release) mode via jumper. Normalized to TRIGGER B input by default.448 |
| TRIGGER B | trigger | — | Trigger input for channel B envelope. Normalization from TRIGGER A can be canceled via solder jumper E.448 |
| VCA CV IN A | cv | — | CV input for channel A VCA. ENV OUT A is normalized to this input; patching a cable here disconnects the envelope. 5V = unity gain. Linear response: 0V=closed, 2.5V=half amplitude, 5V=unity, >5V=gain.448 |
| VCA CV IN B | cv | — | 448 |
| Outputs (2) | |||
| ENV OUT A | cv | -0.5V to 6V | Envelope output for channel A. Peaks at about 6V and rests at about -0.5V. Normalized to VCA CV IN. LED indicates envelope activity.448 |
| ENV OUT B | cv | -0.5V to 6V | 448 |
Parameters 7
| Name | Type | Range | Behavior |
|---|---|---|---|
| Decay A | knob | 8ms – 3000ms | Sets the decay time of the channel A envelope. By default, CV input is added to knob position. Can be reconfigured via solder jumper so that knob becomes an attenuator for the DECAY CV IN signal.448 |
| Decay B | knob | 8ms – 3000ms | Sets the decay time of the channel B envelope. By default, CV input is added to knob position. Can be reconfigured via solder jumper so that knob becomes an attenuator for the DECAY CV IN signal.448 |
| Jumper A (Gate Mode) | jumper | — | Closing this jumper puts the TRIGGER input into gate/release mode, where the envelope follows gate-low instead of firing on gate-high (trigger/decay mode when open).448 |
| Jumper B (Tambourine) | jumper | — | Closing the TAMB jumper causes the VCA cell to resonate/self-oscillate at high pitch. When processing noise, it can sound like a tambourine. Circuit-bent by design; may self-oscillate at a frequency annoying to dogs and audio equipment.448 |
| Jumper C (Knob Scheme A) | jumper | — | Selects knob control scheme. Default (MIX): CV adds to knob position. Alternative (ATTENUATOR): knob acts normally with no cable, becomes attenuator of DECAY CV IN when cable inserted.448 |
| Jumper E (Trigger Normalization) | jumper | — | By default, TRIGGER A is normalized to TRIGGER B. Cutting this trace cancels the normalization so each channel has its own independent trigger input.448 |
| Jumper F (Envelope Shape) | jumper | — | Default: exponential decay envelope shape. Cutting the trace changes the envelope to linear shape.448 |
Firmware history 0 versions
No firmware history recorded.
References 2
- [448]
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[449]
Bastl Instruments Skis II product pageproduct_page● verified 2026-05-17