Deck controls
Jog wheel
A jog wheel is the round control on a media player or controller used to nudge, scrub and scratch. Its touch-sensitive top behaves like a record; its outer ring bends pitch without stopping playback.
In practice
The outer ring nudges, the top scratches. In vinyl mode a hand on the top stops the record.
Check which mode the deck is in before you touch anything — vinyl mode makes the top surface act like a record and CDJ mode makes it a fast search instead. For correcting a beat, use the ring: a light push forward or back bends the pitch temporarily and returns without a jump. Save the top for deliberate scratching and for stopping a track on purpose. Jog tension, where a deck offers it, is worth setting once to something heavy enough not to drift under a resting hand.
Ring
For nudging
Top
For scratching, in vinyl mode
No mass
What separates it from a platter
Where these come from: Standard jog-wheel behaviour on Pioneer media players and controllers — documented behaviour, not catalog figures. For what we can measure, see the thing it is imitating.
Why it matters
The top and the ring do genuinely different jobs and mixing them up is the commonest beginner error on a player. Touching the top in vinyl mode stops the track dead — which is correct if you meant to scratch and disastrous if you meant to nudge. The ring is what you want for a nudge, and it never stops anything.
It is also not a platter, however much it is designed to feel like one. There is no mass and no motor, so it holds no momentum: releasing a jog does not produce the spin-up a released record does, which is why a spin-in feels different and why torque is a specification a jog does not have.
Frequently asked
Why does the track stop when I touch the jog wheel?+
The deck is in vinyl mode, where the top surface behaves like a record. Use the outer ring to nudge, or switch modes if you never want the top to grab.
What is the difference between a jog wheel and a platter?+
A platter is a driven disc with real mass that a record sits on; a jog wheel is a control that imitates one. The jog holds no momentum, so a release does not spin up the way a record does.
Can you scratch on a jog wheel?+
Yes, in vinyl mode, and modern jogs are good at it. The feel differs because there is no mass behind it, which is why turntablists still work on platters.
Related terms
Platter
The platter is the driven metal disc a record sits on, spun by the motor beneath it. Its mass stores rotational energy, which is what holds speed steady when a hand touches the record above it.
Vinyl simulation
Vinyl simulation is the setting that makes a jog wheel behave like a platter: touching the top stops the track, the side nudges it, and releasing lets it spin back up to speed.
Pitch bend
Pitch bend is a momentary speed change used to correct phase — nudging the jog wheel or holding a bend button to push a track forward or drag it back without altering its tempo setting.
Spin-in
A spin-in launches the incoming record by spinning it forward by hand into its first beat, so it arrives with an audible rising whoosh rather than simply starting. It is the entrance counterpart of a spinback.
Explore: Beginner mixing guide · Vinyl mode · Pitch bend · All DJ terms