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Gain - The amount of increase in audio signal strength, often expressed in dB.
Gain Control - A device that changes the gain of an amplifier or circuit, often a knob that can be turned or a slide that can be moved up arid down.
Gain Reduction - The working of a limiter or compressor reducing gain during high-level passages.
Gain Structure - The way in which the gain varies in the stages or sections of an audio system.
Gate - A dynamic processing device that turns a channel off or down when the signal drops below a certain level.
Graphic Equalizer - An device with several slides controlling the gain of audio signal present which is within one of several evenly spaced frequency bands (spaced according to octaves).
Ground Lift - A switch that breaks the connection between the ground point in one circuit and the ground point in another circuit.
Ground Lifter - An adapter that takes a three prong power cord and plugs into a two prong outlet, used to disconnect the third (ground) pin of the power outlet. WARNING: It can be VERY DANGEROUS to have no ground connection to the case by using a ground lifter and not grounding the unit by other means.
Ground Loop - A double grounding of a line or electronic device at two different "ground" points of differing voltage.
Group Master - A slide control used to send out a control voltage to several VCA faders in individual channels, thus controlling the gain of several channels.
Grouping - 1) Controlling the gain of several individual channels with a Group Fader. 2) The mixing together of several individual audio signals to send a mixed signal out of the console to record a track on a multitrack tape machine.
Guitar Controller - An electric guitar or device played like an electric guitar that puts out MIDI signals that can be used to control synthesizers and sound modules.
Guitar Processor - A unit that will add effects to a direct guitar signal, including a simulated instrument amplifier sound and (often) delay and reverb effects.
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