Tip, Sleeve (TS) refers to a type of 1/4" phone plug that is used for unbalanced connection.

A function found in some sequencers and effect devices that have time based effects, where tapping a virtual button or an actual physical one can change the governing tempo. From two or more successive taps, the program or device will extrapolate a tempo based on beats per minute.

Also know as a barrier strip. A series of screw terminals arranged in a line to which other devices are connected. Popular on equipment from about twenty years ago due its low cost and reliability, nowadays the connectors are mostly found on equipment such as amplifiers or crossovers that are to be installed into permanent installations.

A small device that is put on the end of certain signal chains to maintain proper impedance. For audio purposes, terminators are essential for terminating SCSI lines. Usually a set of transistors housed in a small plastic container with the correct form of plug for inserting into the final device of a chain.

A parameter that is found on dynamic based processors such as compressors, limiters and gates. The setting determines at what level the processor will begin to function.

On MIDI equipped devices, the "Thru" connector simply passes on, unchanged, the information received at the "In" port

Tone Coded Squelch is a way of letting a receiver know that a correct signal is being received. The tone sent is at a frequency outside human hearing and is usually combined with another type of muting, such as signal level squelch.
(See Squelch)

Toroidal Transformers -
A transformer in the shape of doughnut. Although costlier to produce and tends to be larger and heavier than other forms of transformers, the shape reduces magnetic fields entering or leaving the transformer, and thus makes it desirable for high-end audio applications.

A transducer is an electronic device that converts energy from one form to another. For the purposes of audio these include microphones, loudspeakers and antenna. Although not generally thought of as transducers, other forms include LED's photocells and even the light bulb.

An electronic circuit capable of outputting or receiving a balanced audio signal without the use of a magnetic transformer.