A phone connector is a family of cylindrically shaped electrical connectors primarily for analog audio signals. Invented in the late 19th century for telephone switchboards, the phone connector remain
Phone plug mated in a phone socket. The plug's grooved tip is held firmly by the socket's spring tip contact. When not mated, this spring instead connects to the flat switch contact for detecting a plug.
TS and TRS plugs of different sizes
Old connectors. On the top is a TRS socket. Plugs are below. The leftmost is a TRS plug; the rest are TS plugs.
Modern profile 1⁄4 in TS plugs
Balanced audio is a method of interconnecting audio equipment using balanced interfaces. This type of connection is very important in sound recording and production because it allows the use of long c
Phone connector (audio)
…in mm, though those dimensions are only approximations. All sizes are now readily available in two-conductor (unbalanced mono) and three-conductor (balanced mono or unbalanced stereo) versions. Four-conductor versions of the 3.5 mm plug and jack are used for certain applications. A four-conductor version…
Three-pin XLR connectors, female on left and male on right
Three-pin XLR plus 6.35 mm TRS phone hybrid jack.