Pick. Tweak. Listen.
Pick a Pedal
Choose from circuits inspired by classic overdrives, fuzzes, distortions, and more.
Tweak Components
Swap diodes, adjust resistors, change capacitors. See the circuit update in real time.
Hear the Difference
Play a guitar sample through your modified circuit. A/B compare with the stock sound.
Real Circuits, Real Sound
PedalLab doesn't use generic audio effects. Each pedal is built from actual circuit schematics — the same physics that govern resistors, capacitors, and diodes in the real world shape your sound here.
The engine is refined with AI to close the gap between simulation and what you'd hear from a real pedal on your board.
For builders, tinkerers, and tone chasers
Breadboarding a circuit to hear what one capacitor change does? Hours of wiring, debugging, and guessing. PedalLab lets you swap components and hear the difference instantly, bringing circuit theory to life through your actual ears, not just equations on paper.
There are great tools out there for circuit simulation, but they weren't designed for someone who just wants to hear the difference between a silicon and germanium diode in a TS808 inspired pedal.
| Feature | PedalLab | LTspice | Multisim | LiveSPICE |
|---|---|---|---|---|
| Hear actual audio output | Yes | No | No | Yes |
| No install required | Yes | No | No | No |
| Guitar pedal circuits built-in | Yes | No | No | No |
| Plain-English component explanations | Yes | No | No | No |
| Real-time parameter tweaking | Yes | No | No | Partial |
| Live audio input (guitar/mic) | Yes | No | No | Yes |
| Works on any device with a browser | Yes | No | No | No |
| Learn-as-you-go interface | Yes | No | Partial | No |
| Free to start | Yes | Yes | No | Yes |
| SPICE-level accuracy | No | Yes | Yes | Yes |
| Custom circuit design from scratch | No | Yes | Yes | Yes |
PedalLab doesn't replace SPICE. It's a faster way to explore "what does changing this component do?" before you fire up the soldering iron.
One time payment, no subscriptions required.
Start free. Upgrade when you want more pedals.
Every purchase supports a small team and helps fund what's next — including a WebAssembly audio engine for even faster, more accurate simulations.
Prices shown in USD. Final price in your local currency will be shown at checkout.