Instruments that run in your browser
A drum machine and two synths built with web audio. Open a link and play. No install, no account.
Drum machine
Elixir Desktop
A six-voice drum machine in the browser. Its engine is a sample-exact JavaScript port of the LXR-02 drum firmware.
- Voices6: three drum/tom, snare/clap, cymbal, hi-hat
- Kits28 bundled, plus any LXR
.SNDfile - FX busDistortion, ring mod, compressor, delay
- Routing6 × 6 crossfeed patchbay
- Accuracy176 million samples checked against the firmware, all identical
Mono synth · VST3 prototype
Elixir Synth
One voice of the Elixir engine played as a synth, with a note sequencer and an LCD screen. It is laid out as the prototype of a VST3 plugin, and it installs as an app that works offline.
- VoiceLXR drum 1 (DR1), every parameter on four tabs
- Sequencer4 pages of 16 steps with gate, accent and slide
- Random10 algorithms, from dice and acid to euclid and arp
- FXEcho, reverb, ring mod, then distortion and compressor on the mix
- MIDICC 1 to 8 turn the eight performance dials
Bass synth · circuit model
TB-303 Circuit Model
A bass synth in your browser that recreates the Roland TB-303 part by part. Instead of imitating the sound, it models the real circuit, including the resistors, capacitors and the famous filter, so every knob behaves like the original hardware. Generate fresh acid lines from classic pattern material, build a “new unit” within factory tolerances or a messed-up one, and run it through a RAT distortion and Lexicon 224-style reverb. It works offline and on your phone.
- Pitch6-bit R-2R ladder, 1/12 V per step
- Filter4-pole transistor/diode ladder, 2× oversampled
- EffectsRAT distortion and a Lexicon 224 reverb, both modelled from their parts
- PatternsFresh acid lines generated from classic pattern material
- UnitsA new unit within factory tolerances, or a messed-up one