
USB sound expander for electronic drums
Play realistic drums.
Without a laptop.
DrumPi replaces your module's sound engine with properly recorded drums — every velocity, every round robin, no lag you can feel.
No soldering · Two boards · Ten minutes


- Latency
Under a millisecond
Stick to speaker. Fast enough that you stop thinking about it and just play.
- Round robins
No machine-gunning
A fast roll never fires the same sample twice, so repeated hits keep breathing.
- Cost
Under $200
A complete module. Keep the pads, the rack and the module you already own.
It sits between your module and your ears.
Nothing about your kit changes. One USB cable in, audio out — and the sound engine you were stuck with is out of the picture.
- 01 — Your kit
You hit the pad
The same pads, cymbals and hi-hat pedal you already play.
- 02 — Your module
It reads the hit
Trigger curves and crosstalk rejection stay as they are, then it sends MIDI over USB.
- 03 — DrumPi
It makes the sound
Picks the right velocity layer and round robin, adds your EQ and reverb, and plays it.
- 04 — Your ears
Straight out
Audio out to headphones, monitors or the desk. No computer in the chain.
Signal chain
Keep your module. Replace its sound engine.
It was built to read pads, and it's good at it. DrumPi doesn't touch any of that — it takes over the moment the note leaves, over one USB cable.
- Connection
- USB MIDI
- Output
- Audio out to desk or headphones
- Per instrument
- EQ, compression, reverb send
- Control
- Any browser on your network

Hear it.
Play-throughs, the introduction, and the build guides.
The mixer lives in your browser.
There is no screen on the box, and nothing to install. Open a browser on your phone or laptop and the whole desk is there — a channel per microphone, with levels, EQ and reverb sends.

Load your own drums.
DrumPi Studio is the desktop tool for turning your own recordings into playable kits. Lay your mics out, mark the hits, set velocity ranges and round robins, export.

Two boards. Ten minutes.
Then just drums.
No soldering, and nothing to recalibrate.
Get in touch
Questions about compatibility, the build, or your own kits.
- Discord
- discord.gg/trbPaD7CNv
- paolo@drumpi.com