Zero-install browser DJ studio

An online DJ mixer that works in three dimensions

Two decks, real key-lock, multi-touch scratching — and a spatial field where each deck has a position around the listener's head, not just a place between their ears. Nothing to install, no account, and the tracks you load never leave your machine.

Headphones recommended · Works in landscape on phones and tablets

What makes it different

Position is a mixing control, not an effect

A normal mixer gives you left, right and loud. Azimuth puts a spatial field in the middle of the mixer: leave deck A orbiting behind the listener and bring deck B in from dead ahead. The eight-bar spatial transition does the handover on beat.

Two-handed multi-touch, by design

Every control captures its own pointer, so a touchscreen behaves like hardware. Hold the platter with one hand to backcue or scratch while the other rides the crossfader or kills a band on the EQ. Both decks can be scratched at once.

Key-lock that survives a scratch

Time-stretching needs a window of upcoming audio, and grabbing the platter destroys it. Azimuth hands off to true varispeed — pitching the way vinyl does — for as long as you hold on, then crossfades back to pitch-locked playback when you let go.

See the drop before you hear it

Waveforms are split into low, mid and high bands, so kicks, vocal breakdowns and drops are visible ahead of the playhead. A Goertzel filter bank reads each track's key and checks both against the Camelot wheel.

Under the hood

Audio engineAudioWorklet playhead with sample-accurate DSP, off the main thread
Spatial360° placement per deck, distance roll-off, beat-synced orbits and transitions
Beat and keyAutomatic BPM detection, beatgrid alignment, Goertzel key analysis, Camelot matching
Deck controlsCue preview, 4 hot cues, beat loops, momentary beat rolls, motor brake, needle-drop
EQ and effects3-band isolator EQ with kill, sweepable filter, reverb, rotating echo
MonitoringSplit-mono headphone cueing through one stereo output, no second sound card
RecordingLossless WAV or Opus off the master, limited so the capture matches what you heard

Questions

Can I DJ on a phone or an iPad?

Yes. The layout breaks on aspect ratio rather than screen width, so a phone held in landscape gets the full rig — a landscape phone is already mixer-shaped. Portrait shows one deck and an A/B switch. Multi-touch works throughout, so you can scratch with one hand and move the crossfader with the other.

How do I cue in headphones without the room hearing it?

Azimuth has a split-cue mode. With a standard 3.5mm splitter cable the master mix goes to one channel and the cued deck to the other, so a single headphone output covers both jobs without a second sound card.

Do I need to install anything, or make an account?

No to both. It runs in any modern browser on the Web Audio API and AudioWorklets. There is no plugin, no download and no sign-up, and the tracks you load never leave your machine.

What is spatial or binaural DJing?

Ordinary stereo can only place a sound between your two ears. Binaural rendering recreates the small timing and tonal differences your ears use to locate a sound, so a deck can sit behind you, above you or off to one side. It needs headphones — over speakers both ears hear both channels and the effect collapses.

Does it work with a DJ controller?

Web MIDI support is on the roadmap and will be free when it lands, along with everything else that runs in the browser. Every control in the app is already driven by a command message, which is the same thing a controller would send.

Open it and load a track.

There is nothing to sign up for. If you want your crates and cues to follow you between machines, that is what Pro is.

Launch the decks