Audio Cables and Connectors. Common Audio Cables. Balanced: Have two conductors and a shield or ground. Used for low impedance - balanced circuits (+4 dBu) Unbalanced: Have one conductor and a shield. Used for high impedance unbalanced, or -10 dBV signals
T = Tip R = Ring S = Sleeve
Sometimes called an instrument or guitar cable
Most pro audio studios use TT (tiny telephone) patchbays.
Each patch point is electrically balanced. Front panel switches make it easy to change between full, half and non-normalled connections.