Typically found on a mixer, but also on some other audio devices, a point at which a signal may be diverted through a breakjack. Inserting a plug breaks the bypassing connection and makes a new connection through the plug to the outside world. There may be two sockets involved with a normalled connection, one marked send and one marked return. On a mixing desk, the input might be connected to the send terminal of an insert point for sending the signal to a device such as a compressor, which then returns the modified signal back into the channel. If no such unit is plugged in, the signal bypasses the insert point. See channel insert, auxiliary send.
