Platter

The platter is the flat, round disc that a record rests directly on top of, usually paired with a mat, and is the part of the turntable that actually spins beneath the stylus. Platters are made from various materials, most commonly cast metal, acrylic, or a combination of materials layered together.

Platter mass and material affect how well the platter resists small speed fluctuations once spinning, since a heavier, denser platter tends to hold speed more steadily against minor motor variations, a property often described as better speed stability. The material also plays a role in damping resonance, with denser or layered platters generally transmitting less vibration up into the record than a thin, lightweight one.

When comparing turntables, platter weight and material are worth checking alongside the drive type, since a well built platter contributes to both perceived detail and background quietness. A mat placed on top, whether felt, rubber, cork or leather, also interacts with the platter material to shape the final sound. A common oversight is judging a turntable purely by its drive system while ignoring platter quality, when both work together to determine overall speed stability and vibration control.