Plug in your guitar through an audio interface, or hear the amp on the built-in demo riff — no gear needed.
Drive, tone stack & cabinet
Reverb, delay & tremolo
🎸 Best: an audio interface
Connect your guitar to a USB audio interface with an instrument (Hi-Z) input using a standard 1/4" cable, plug the interface into your computer, then press Plug in and pick it when the browser asks for the microphone. Set Output to the same interface so the amp plays into its headphone jack, and switch the interface's direct monitoring off so you hear the amp rather than your raw guitar.
🎤 It also works with a mic
No interface? Your laptop mic will pick up an acoustic or unplugged electric guitar and run it through the amp. It's noisier and can feed back through speakers, but it's a real way to try the sound — with wired headphones on.
⏱️ About latency
Browsers add roughly 15–40 ms between your pick and your headphones — fine for practice and jamming, a touch looser than a native amp sim with an ASIO driver. Wired headphones only; Bluetooth adds far too much delay.
🔒 100% private
The signal is processed live by the Web Audio API on your device and plays straight back out. Nothing is recorded, nothing is uploaded, and no audio ever leaves your browser.
About This Online Guitar Amp
Guitar Tool Hub's free online guitar amp turns your browser into a guitar amplifier — no download, no install, no account. Plug your guitar in through a USB audio interface (or use your microphone), press Plug In, and play through a live amp chain: three drive channels (clean, crunch, high gain), a bass/mid/treble tone stack, a speaker cabinet simulation, and an effects rack with reverb, delay, and tremolo. Five presets get you to a usable sound in one tap, and every knob adjusts live while you play. Don't have your guitar or an interface handy? The built-in demo riff plays a looping clean guitar line through the exact same amp chain so you can hear every channel, knob, and effect with zero setup. The whole signal path runs in real time in your browser via the Web Audio API — nothing is recorded or uploaded.
- 01Live guitar input through an audio interface or microphone
- 02Three amp channels: clean, crunch, high gain
- 03Gain (drive) and master volume controls
- 04Bass / mid / treble tone stack
- 05Speaker cabinet simulation (can be toggled off)
- 06Effects rack: reverb, delay (time, feedback, mix), tremolo (rate, depth)
- 075 one-tap presets from Clean Sparkle to High Gain Lead
- 08Built-in demo riff — hear the amp with no guitar or hardware
- 09Input and output device pickers — route the amp to your audio interface
- 10Automatic routing — the amp goes back to the interface your guitar is plugged into, and both choices are remembered
- 11Input and amp-output level meters — see signal arriving and the amp producing sound
- 12100% private — audio is processed live in the browser, never recorded or uploaded
- 13Free — no app download or account needed
Frequently Asked Questions
Connect your guitar to your computer — ideally through a USB audio interface with an instrument (Hi-Z) input — open the online guitar amp, press "Plug in — live input," and allow microphone access. Your guitar signal runs live through the amp's drive, tone stack, cabinet sim, and effects, and plays back through your headphones in real time.
An audio interface with a 1/4" instrument input gives the best signal and lowest noise, but it isn't required. Your device's built-in microphone can pick up an acoustic or unplugged electric guitar and run it through the amp, and the built-in demo riff lets you hear the whole amp — every channel, knob, and effect — with no guitar or hardware at all.
First press one of the source buttons — the amp is silent until a source is running. For live input: check that your browser allowed microphone access, that the right input device is selected in your system settings, that your interface's input gain is turned up (watch the input level meter), and that the Master knob isn't at zero. If you still hear nothing, try the demo riff — if that works, the amp is fine and the issue is the input.
You're almost certainly listening to your audio interface's direct monitor instead of the amp. Most interfaces send the raw input straight to the headphone jack in hardware, which never passes through the browser, so no channel or knob can change it. Turn the interface's monitor / mix knob fully to "USB" (or switch direct monitoring off), and set the Output dropdown on this page to the interface itself — by default the browser plays through your system's default output, which on Windows often stays on the laptop speakers even with an interface plugged in. This page does that for you where it can — when your guitar comes in through an interface, the amp is routed straight back into that same interface, and both device choices are remembered next time you visit.
Some, yes. Browsers typically add about 15–40 ms of round-trip latency, which most players find fine for practice and jamming, though it's looser than a native amp sim using an ASIO driver. To keep it playable: use wired headphones (Bluetooth adds 100–200 ms and is unplayable), and turn off your interface's direct monitoring so you don't hear a doubled signal.
Make sure the browser's voice processing isn't interfering — this amp already disables echo cancellation, noise suppression, and auto gain on the input, but a low input signal will still sound thin when driven hard. Raise your interface's input gain until the input meter moves healthily, keep the cabinet sim on (it's what makes distortion sound like an amp instead of a fizzy buzzer), and use an instrument (Hi-Z) input rather than a line or mic input for an electric guitar.
No. The signal is processed live by the Web Audio API on your own device and played straight back out. Nothing is recorded, stored, or uploaded — no audio ever leaves your browser.
It's not recommended for live input: the amp's output would come out of your speakers and back into your input, causing a feedback loop. Wired headphones (or headphones plugged into your interface) solve this. The demo riff is safe to play through speakers, since it doesn't use the microphone.
Yes — completely free. No account, no download, and no payment required. It runs entirely in your browser on desktop and mobile.