(Acoustics) In a mixer:
- A line level input designed to receive a signal from an outboard device.
- The controls for that input. Any line input can be used as a return or returns can be used for line inputs. Returns don't usually have as extensive of access to auxiliaries and EQ as standard line inputs do.
(Architecture) Receding edge of a flat face. On a flat signboard, for example, the return is the edge which makes up the board's depth.