Brooks Cinema RM 909 Limiter

A device which reduces gain when the input voltage exceeds a certain level.

Expander
A device that causes expansion of the audio signal.

Brooks Cinema KP 30 Input Impedance
The opposition to current flow by the first circuits of a device.

Line Out (Line Output)
Any output that sends out a line level signal, such as the output of a console that feeds a recorder.

Brooks Cinema TX 509 Ground
In electronics, a place (terminal) that has zero volts.

ID
An index signal (digital data that gives the machine information of where selections start, their selection number, etc.) on a DAT or CD.

Clicking
Pressing and immediately releasing the switch on a computer's mouse.

High Hat
A double cymbal on a stand which can be played with a foot pedal or by the top cymbal being hit with a stick.