Deck controls
Sync vs beatmatching
Sync locks two tracks to a shared tempo using their analysed beatgrids. Beatmatching does the same by ear and hand. Sync is faster and depends on the analysis; beatmatching is slower and depends on you.
In practice
Sync inherits the grid’s errors. Learn to beatmatch so you can hear them, then use whichever fits the record.
Use sync where the analysis is trustworthy and your attention is better spent on selection, EQ and phrasing — which is most modern club music, honestly. Learn beatmatching anyway, because it is what lets you play a record with no grid and what tells you a sync lock is wrong before the room finds out. And note that sync does nothing at all about phrasing: two tracks perfectly locked in tempo can still arrive in the wrong part of the arrangement, which is the error people most often blame on sync and is not sync’s job.
The grid
What sync depends on
Your ears
What beatmatching depends on
Neither
Fixes phrasing
Where these come from: How the two approaches fail — technique, not a catalog figure. For what we can measure, see the failure sync inherits.
Why it matters
The argument is old and mostly badly framed. Sync is not cheating and it is not free: it inherits every error in the grid, so a track analysed wrong is locked wrong, confidently, and the DJ who cannot hear that has no way to recover. The skill sync removes is the skill that catches its failures.
What actually decides it is what you play. A library of gridded electronic music is exactly the case sync was built for. Vinyl, disco, live recordings, unreleased material and anything a grid never fitted are the cases where sync is unavailable or wrong, and where hands are the only option.
Frequently asked
Is using sync cheating?+
No, and the framing misses the real cost: sync inherits every beatgrid error, so a DJ who cannot beatmatch cannot tell when it has locked to the wrong thing.
When does sync not work?+
On anything without a reliable grid — vinyl, live recordings, disco, hand-played material, unreleased tracks. Those are exactly the records where beatmatching is the only option.
Does sync fix phrasing?+
No. It matches tempo and beat position, not structure. Two tracks can be perfectly synced and still have their sections in the wrong place relative to each other.
Related terms
Sync
Sync matches one deck’s tempo to the other automatically and holds it there, using the beatgrid the software calculated. It removes the arithmetic of beatmatching, not the decision about which record follows which.
Beatmatching
Beatmatching is lining up two tracks so their beats land together — matching the tempo, then nudging the phase until the kicks coincide. It is the base skill every other mixing technique sits on top of.
Beatgrid drift
Beatgrid drift is a grid that lines up at the start of a track and slides out of alignment later — the tempo the software stored is close to the real one but not equal to it.
Pitch riding
Pitch riding makes continuous small corrections to the pitch fader to hold two records in time by hand, rather than nudging the platter. It compensates for drift over a long blend.
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