How a belt-drive turntable works
In a belt-drive deck the platter rests on a centre spindle supported by a bearing, and a belt of natural or synthetic rubber links it to a small motor pulley. Audio-Technica's comparison notes that the belt usually runs around a rim under the platter, though some designs loop it around the outer edge.
The motor sits apart from the platter, often isolated from the surface the platter is mounted on. That matters because any vibration that reaches the stylus can affect the sound or cause tracking problems. Audio-Technica adds that the simple design lets even a modestly priced belt-drive model sound good.
- Speed change: a button on some models; on others you move the belt to a different pulley step by hand.
- Upkeep: the belt is a wear part. It is usually inexpensive and easy to replace yourself.
- Start-up: the platter takes a moment to reach speed, which does not matter for listening.
How a direct-drive turntable works
In a direct-drive deck the platter is attached straight to the motor. Audio-Technica points out that the centre spindle is actually part of the motor, and no belt is needed. With fewer moving parts, there is no belt to wear out and need replacing.
Direct drive delivers high torque and speed stability. Audio-Technica describes it as required for DJ and broadcast work, where the platter must start quickly and an electronic brake can stop it at a precise spot. Many direct-drive decks also have pitch control, which DJs use for beat-matching.
The trade-off is that the motor sits right under the record. Wikipedia's article on direct-drive turntables notes that motor vibration can be more of an issue than with belt drive; designers counter it with shock-absorbing material placed between the motor and the platter, along with careful motor design.
Belt and direct drive side by side
| Feature | Belt drive | Direct drive |
|---|---|---|
| Motor position | Beside the platter, linked by a belt | Under the platter, the spindle is part of the motor |
| Start-up and torque | Gentle, takes a moment | Fast start, high torque |
| Motor vibration | Kept away from the platter by design | Controlled by motor design and damping |
| Wear parts in the drive | Belt needs replacing eventually | No belt to replace |
| Typical use | Home listening | DJing, broadcast, home listening |
Older and vintage decks sometimes use a third design, the idler wheel, where a rubber wheel presses against the platter rim. Wikipedia lists it as the third of the main turntable designs still made.
Why DJs use direct drive
The DJ link goes back to the Technics SL-1200, a direct-drive series introduced in October 1972. Wikipedia recounts how New York hip hop DJs, including Grandmaster Flash, found that its motor kept the correct speed even as they moved the record back and forth, which helped scratching develop. The series went on to sell more than three million units.
If you plan to scratch, cue or beat-match, choose direct drive. If you mostly sit and listen to albums, the drive type is only one factor among several.
What matters more for home listening
- An adjustable tonearm with a counterweight and anti-skate lets you set tracking force correctly.
- A replaceable cartridge or stylus lets you upgrade and maintain the turntable over the years.
- A built-in phono preamp you can switch off gives you options when your amplifier changes.
- A level, steady surface away from the speakers helps either drive type sound its best.
- Spare parts: belts and styli that are easy to find keep an older deck running.
If you are choosing between two similar decks, look at the practical details too: how the speed is changed, whether belts and styli are easy to buy, and whether the dust cover and controls feel solid. Those details decide how pleasant the turntable is to live with every day.
Our guides to what you need to play vinyl and turntable parts go through these features in more detail.
Check the speed, whichever drive you choose
Belts stretch and pick up dirt; motors and their electronics age too. A quick speed check every few months tells you whether anything has changed. The speed check in the CrateCore app reads the platter's rotation with your phone's gyroscope and shows both the average deviation from 33 or 45 and how much the speed wobbles during a turn, as an estimate.