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Guide · SYNC

SYNC, Mic or Line: match visuals to your DJ set

12 August 2026 · 5 min read

SYNC is the bridge between music and image. Give LumaDeck a useful pulse and the visual stops running beside the set: it starts breathing with it.

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LumaDeck Master showing BPM and SYNC performance controls
The Master keeps BPM, TAP and nudge beside the scene grid so correction stays reachable.

SYNC: learn the response without a cable

SYNC gives the engine an internal beat at the BPM you set. Use it to understand what beat and energy do to the visual, rehearse transitions or check a screen when no audio setup is available. It follows your tempo without listening to the room.

Mic: the fastest route to the room

Mic listens through an input available to the browser. It is the quickest setup for a laptop near the speakers: grant permission, choose the input and let LumaDeck hear the room. The trade-off is that it also hears conversations, reflections and everything else around it.

Line: the cleanest feed from the set

Line is the deliberate route: take an output from the mixer into an audio interface and select that input in the browser. The engine receives the programme more directly, with less of the room mixed in. For the cabling and operating-system side, use the audio return guide.

BPM, TAP and nudge stay under your hand

The Master displays BPM and keeps TAP plus −1/+1 nudge at hand. Mark the tempo you know, then nudge when the pulse needs a small correction. The controls keep musical judgement with the person playing the set.

SYNC is not cloud sync

Here, SYNC means aligning visual movement with musical time. It does not mean synchronising two computers over Wi-Fi or copying a show to another device. Choose the audio path that fits the booth, test it before doors and keep the visual response under your control.

A practical order

Start with SYNC to learn. Use Mic when speed matters. Use Line when you control the booth and want the cleanest source. In every case, watch the visual rather than chasing a number: the room is the final reference.

Give the visual engine a pulse

Open LumaDeck, choose the input that matches your setup and see how the Master responds.

Open LumaDeck