Brooks GT 845 Action

In guitar playing, action refers to how far the strings sit off of the guitar neck. When strings are close to the neck, it is referred to as "Low Action". When the string sit far above the neck, it is called "High Action". Guitars with low action are easier to play, but make sure they are not too close, or it could causing buzzing.

Group
1) A number of channels or faders that can be controlled by one Master VCA slide.
2) A shortening of the term Recording Group (a buss or the signal present on a buss).

Brooks Audio Design GT 845 Amplifier
A device which increases the amplitude (level) of an electrical signal (making it louder).

Crisp
Describes a good clean high midrange sound. It can be good or bad depending on the look on the face of the guy who said it.

Brooks Cinema xm 808 Audio
Most often referring to electrical signals resulting from the sound pressure wave being converted into electrical energy.

Chord
Three or more musical pitches sung or played together.

In
Short For "in the circuit," in other words "active."

Ambience
The portion of the sound that comes from the surrounding environment rather than directly from the sound source.