The difference
A preset repeats.
A signal responds.
This is the whole distinction, and it is easier to feel than to argue about. A pattern you dialled in has no idea what the track is doing. Something built from the track cannot help but follow it.
Pick a pattern from a list
The audio you chose sets the pattern
The same buzz on every track
Each track carries its own touch
Turn it up when it stops landing
Built to stay vivid without turning it up
From sound to sensation
Three things happen at once
01
It listens to the audio itself
Not to a genre tag or a preset you picked — to the actual sound as it plays. Loudness, texture, the shape of a rise and the moment it lets go. That reading is refreshed many times per second, continuously, for as long as the track runs.
02
It knows what kind of moment this is
A breath is not a beat. A whispered line and a bass drop can measure the same on a meter and mean opposite things to your body. So the reading is interpreted by content type — narrative, ASMR, music, guided — before it is allowed to become touch.
03
Two motors, two different jobs
Duet carries two independent voice-coil motors, each tuned for where it sits on the body. They are driven separately, so depth and detail can happen at the same time instead of taking turns — the way a low note and a brushed cymbal share one piece of music.
Made before you press play
Every track arrives with
its touch already made
For the library we produce ourselves, the touch is not improvised on your phone. It is built from the master recording ahead of time, checked against a fixed set of rules, and shipped with the track. Anything that fails those checks does not ship — it goes back to be made again.
That is why two people listening to the same track feel the same thing, and why it holds together on a quiet passage instead of falling silent and waiting for the next loud moment.
Sound and touch begin and end together
They are two halves of one timeline, not two apps trying to agree. When playback ends, the motors end with it.
Nothing leaves your phone to make it work
The pairing is a direct Bluetooth link between your phone and the device. Feeling something does not require telling us about it.
Bring your own audio, too
The system is built around our own library because that is where we can guarantee the result — but it is designed to respond to sound, not to a catalogue entry.
Hear it for yourself
The signal is easiest to understand with something playing. The home page has a live one you can watch move; the library is where it comes from.
Looking for the device itself? See Duet.