A switch is more than a break in continuity — it’s a decision. In synthesis, switches define states, route signals, and invite interaction. They’re the interface between intention and electricity.
What Is a Switch?
A switch opens or closes an electrical circuit. It either allows current to flow or stops it — binary, yet expressive.
| Type | Description | Synth Use |
|---|---|---|
| SPST | Single Pole Single Throw — basic on/off | Power toggles, simple gates |
| SPDT | Single Pole Double Throw — one input, two outputs | Signal routing |
| DPDT | Double Pole Double Throw — two inputs, two outputs | Polarity reversal, complex switching |
| Momentary | Only active while pressed | Triggers, tap tempo |
| Latching | Maintains state until toggled | Mode selection, power |
Switches in Modular Synthesis
- Manual Gates: Trigger events by hand — rhythm becomes tactile.
- Routing Switches: Redirect CV or audio paths — patching without cables.
- Mode Selectors: Change behavior — from envelope shapes to oscillator ranges.
Philosophical Footnote
A switch is a metaphor for agency. It doesn’t generate signal — it permits it. In a world of constant flow, the ability to pause, redirect, or choose is power in itself.