Reference
HiFi Glossary
Every term you'll encounter when buying, setting up or upgrading a vinyl system — explained clearly, without the jargon spiral.
Auto-Lift
Auto-lift is a mechanism that raises the tonearm off the record at the end of a side so the stylus does not sit in the lead-out groove. It does not return the arm to its rest — it simply prevents endless locked-groove play and excess stylus wear. It is the minimum level of automation many otherwise manual decks offer.
Auto-Return
Auto-return lifts the tonearm at the end of a side and swings it back to its rest, and usually stops the platter. It is useful for unattended listening and extends stylus life, but adds mechanical complexity in the tonearm. Purists often prefer pure manual operation for the simplest signal path.
Bearing
The bearing is the precision-engineered shaft and sleeve that lets the platter rotate smoothly with minimal friction and play. A good bearing keeps the platter perfectly concentric and axially stable, which directly impacts rumble and pitch stability. Bearing quality is one of the most important and least visible aspects of turntable engineering.
What Is a Turntable? →Belt Drive
A belt drive turntable uses an elastic belt looped between the motor and the platter. The belt isolates the platter from motor vibration, which helps reduce rumble — the low-frequency noise that can colour the sound of the music. Most entry-to-mid-level turntables use belt drive.
Belt Drive vs Direct Drive vs Idler →Built-in Phono Stage
Some turntables include an internal phono preamp, usually a basic MM stage selectable via a switch. This lets the deck connect to a line input on any amplifier or powered speaker — convenient for beginners. Serious upgrades typically involve bypassing the internal stage in favour of an external phono preamp.
What Is a Phono Stage? →Counterweight (Deck)
On a turntable, the counterweight is the calibrated mass at the back of the tonearm that balances the cartridge and sets tracking force. It slides along the arm's rear stub and is usually marked with a rotating dial in grams. Getting the counterweight right is step one of any cartridge setup.
What Is Tracking Force? →Direct Drive
In a direct drive turntable the motor spindle is the platter spindle — there is no belt or wheel between them. This gives very high speed stability, instant start-up and strong torque, which is why DJs prefer direct drive. Modern high-end direct drive decks use sophisticated motor control to keep motor noise and cogging out of the signal.
Belt Drive vs Direct Drive vs Idler →Dust Cover
The dust cover is the hinged acrylic lid that protects the deck from dust and stray contact when not in use. Some audiophiles play with the lid removed, as the cover can pick up airborne vibration and colour the sound, though it can also reduce feedback in loud rooms. Dust is the enemy of vinyl playback, so covering the deck between sessions matters.
Flutter
Flutter is fast speed variation, typically above 6 Hz, heard as a roughening or shimmering of sustained tones. It is caused by motor cogging, bearing chatter or belt irregularities. On well-designed decks flutter is below audibility, but it is one of the clearest giveaways of a poor drive system.
What Is Wow and Flutter? →Fully Automatic Turntable
A fully automatic turntable starts play, positions the stylus on the lead-in groove, and lifts and returns the arm at the end of the record — usually with a single button. This is convenient and safe for shared households, but the automation linkage can slightly compromise tonearm performance. It is the classic family-friendly vinyl setup.
How to Choose Your First Turntable →Idler Drive
An idler drive turntable uses a rubber wheel (the idler) to transfer rotation from the motor to the inside rim of the platter. This design delivers high torque and a lively, dynamic presentation, and was dominant in vintage Garrard, Thorens and Lenco decks. Idler drives can be noisier than belt or direct drive designs unless carefully restored.
Belt Drive vs Direct Drive vs Idler →Isolation Feet
Isolation feet are the footers under the plinth that decouple the deck from the surface it sits on. They can be compliant (rubber, sorbothane, springs) to absorb footfall and airborne bass, or rigid (spikes, cones) to drain vibration. Good isolation keeps structural noise from modulating the stylus-groove interface.
Manual Turntable
A manual turntable requires the user to cue the tonearm onto the record and lift it off at the end of the side. Removing automation simplifies the tonearm mechanically and is generally preferred by audiophiles seeking the purest setup. Most mid-to-high-end decks are manual.
How to Choose Your First Turntable →Motor
The motor is what spins the platter. Turntables typically use AC synchronous, DC or brushless DC motors, each with trade-offs in torque, noise and speed regulation. Motor isolation and control electronics are as important as the motor itself — a noisy or poorly regulated motor shows up as rumble, wow and flutter.
What Is a Turntable? →Platter
The platter is the rotating disc on which the record sits. Its mass and material (aluminium, acrylic, glass, composites) affect rotational stability and resonance behaviour — a heavier platter generally stores more kinetic energy and resists speed fluctuations caused by stylus drag. The platter sits on top of the bearing and is driven by a belt, an idler wheel or directly by the motor.
What Is a Turntable? →Platter Mat
The mat sits between the platter and the record. Felt, rubber, leather, cork and acrylic mats each couple and damp the record differently, and swapping mats is one of the cheapest ways to change a deck's character. The goal is good mechanical contact with the record while controlling resonance.
Plinth
The plinth is the chassis or base of the turntable. It holds the bearing and tonearm in rigid alignment and its mass, damping and material (MDF, aluminium, acrylic, plywood, slate) shape how external vibration reaches the cartridge. Plinths can be solid or use a sub-chassis that floats on springs to isolate the platter and arm.
Record Clamp
A record clamp or weight presses the record down onto the platter at the spindle to improve contact and flatten mild warps. Screw-down clamps apply the most pressure; simple weights rely on gravity. Clamps can tighten bass and reduce spurious resonances, but too much mass can stress the bearing.
Rumble
Rumble is the low-frequency mechanical noise generated by the motor and bearing that reaches the stylus. It is specified as a signal-to-noise ratio in dB — the more negative, the quieter the deck. Audible rumble shows up as a low-end haze or as woofer pumping on systems with extended bass.
What Is Turntable Rumble? →Semi-Automatic Turntable
A semi-automatic turntable requires the user to cue the stylus onto the record manually, but automatically lifts and returns the arm at the end of the side. It blends hands-on cueing with protection against end-of-side stylus wear. It is a common compromise in mid-price decks.
Speed Accuracy
Speed accuracy is how close the platter holds to its nominal speed — 33 1/3, 45 or 78 RPM. Deviations shift pitch: a platter running 1% fast makes the music noticeably sharper. Accuracy is usually verified with a strobe disc or a smartphone app that measures a test tone.
Speed Selector
The speed selector is the switch or button that changes the platter between 33 1/3, 45 and sometimes 78 RPM. On belt drive decks this may move the belt to a different motor pulley diameter, while direct drive and electronically controlled belt drives change speed via motor control. Always match the selected speed to the record's label.
Spindle
The spindle is the vertical metal post at the centre of the platter that locates the record through its centre hole. Its diameter is standardised so records sit concentric with the platter's rotational axis. A worn or off-centre spindle causes audible pitch wobble.
Strobe
A strobe is a visual speed-check tool — either dots printed around the platter rim illuminated by a flickering light, or a separate strobe disc placed on the platter. When the deck runs at the correct speed the dots appear stationary. It is the fastest way to verify pitch accuracy.
Turntable
A turntable is the mechanical device that spins a vinyl record at a precise speed while a stylus traces the groove to recover the audio signal. It consists of a platter, bearing, motor, plinth and tonearm, and may include a built-in phono stage or be fully passive. Quality turntables aim to rotate at a stable speed while isolating the cartridge from external vibration.
What Is a Turntable? →Wow
Wow is slow speed variation, typically below about 6 Hz, heard as a pitch wobble on sustained notes — piano and vocals reveal it most. It is caused by issues like an eccentric platter, a stretched belt or a worn bearing. Wow is measured together with flutter as a single wow-and-flutter percentage.
What Is Wow and Flutter? →Keep learning
Every term above links to a full explainer when one exists.