The term PRODUCTION STUDIO DEVICE can be summarized as a fader, which is a five-letter word. A fader is a type of control device used in audio production studios to adjust the level of an audio signal. It is typically a sliding knob or lever that is used to adjust the volume of a sound source. Faders are also used to adjust the balance between multiple audio sources, such as when mixing different tracks together. Faders are an essential part of any audio production studio and are used to create professional sounding mixes.