Amp Simulator
Plug your guitar into a USB audio interface and play through an amp that runs in the browser. The chain has a noise gate, several distortion stages, EQ, cabinet simulation, delay and reverb. The feature is experimental and latency depends on your computer and interface. Use headphones.
How to use it
- Connect the guitar to a USB audio interface, put on headphones and choose the interface as the input.
- Read the warning, tick the box and press Start. The browser asks for permission to use the microphone.
- Raise Output level slowly from the low starting level. The emergency brake at the top silences everything at once.
- Pick a preset or set the gain stage, EQ, cab, delay and reverb yourself. Save your favourites as presets.
- Watch the latency indicator. If the delay is high, closing other programs and tabs often helps.
How does an amp simulator work in the browser?
An amp simulator takes the signal from your guitar, processes it in several stages and plays it back through your headphones. Fabbe's version runs in the browser as a chain: noise gate, amp, tone controls, cab, delay and reverb.
You connect the guitar through a USB audio interface. The browser asks for permission to use the input, and the sound is processed only on your device.
- Input gain can be set between minus 12 and plus 24 dB.
- The noise gate silences the signal when you are not playing. You set the threshold in dB.
- Five gain stages: Clean, Crunch, Lead, High gain and Extreme.
- Bass, mid, treble and presence shape the tone after the amp.
Which cabs and presets are included?
Cab simulation shapes the sound the way a speaker cabinet does in a real room. The tool has three built-in cabinets, Tight 4x12, Open 2x12 and Vintage 1x12, and you can choose No cab or load your own impulse response.
Five ready-made presets work as starting points: Clean, Crunch, Metal rhythm, Lead and Djent. Metal rhythm and Djent turn on the noise gate and use the Tight 4x12. Lead adds a little delay and reverb. Your own presets are saved in Tone Vault.
How do I get low latency and safe sound?
Latency is the time between picking a string and hearing the sound. The tool rates under 15 ms as good, 15 to 30 ms as acceptable and anything above as noticeable.
The browser can only estimate parts of the delay, so the number is a rough guide. Close other programs and tabs, use an interface with its own driver support if you can, and change buffer settings only by testing.
Always use headphones and raise the output level slowly. The panic button silences the sound at once, and so do Escape and M.
Frequently asked questions
How large is the latency?
It depends on your computer, your audio interface and the browser. The browser can only estimate part of it, so the real latency is often higher than the figure shown. The latency indicator is an honest hint, not a measurement.
Is my playing sent anywhere?
No. Audio is processed entirely on your device and is never recorded or sent. The microphone indicator shows when the input is open.
Why should I use headphones?
With speakers the sound can reach the guitar or the input again and cause loud feedback. Headphones prevent that. The tool has an emergency brake and mutes the sound if it detects signs of feedback, but that does not replace headphones.
Can I use my own cabinet impulse response?
Yes. Choose Custom IR and load an audio file from your device. The file is read locally, trimmed to three seconds and never uploaded.
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- Riff Lab: Shape a riff with sliders for pedal tones, melody, chugs, tremolo and chromatic notes, then build on it.
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- Community: Browse riffs, exercises, presets and backing tracks that other guitarists have shared, and share your own.