Vinyl records are manually made one at a time in a hydraulic press. They are not mass-produced by machines like CD’s or DVD’s. To make each record, steam from the hydraulic press softens plastic PVC pellets to form a vinyl record as the stampers push an impression of the master recording onto it. Because they are made from a softened plastic, not every copy will be perfectly flat. They will still play without skipping and with no loss to sound quality.
Splatter, Haze, Glitter, and Glow in the Dark Vinyl: Due to the manufacturing process, these vinyl colors can have noisy audio quality.