An LP record clamp, also known as a record weight or record puck, is a device used in vinyl playback to improve the contact between the record and the turntable platter. It typically consists of a heavy, cylindrical mass made from materials like metal or acrylic, with a central spindle or screw that allows it to be placed on the turntable spindle.
The main purpose of an LP record clamp is to ensure better contact and stability between the vinyl record and the turntable platter. When placed on top of the record, it helps flatten warped records and prevents resonance or vibration during playback. This results in reduced record wobble, improved tracking, and enhanced sound quality by reducing unwanted resonances and vibrations. Vinyl enthusiasts often use record clamps to optimize their analog listening experience, especially with older or slightly warped records.