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.
Glitter and Glow in the dark vinyl: Due to the manufacturing process, these vinyl colors can have noisy audio quality.