Brooks RM 909 Capo

A clamp-like device that is placed vertically across the guitar neck. It is used to change the pitch of the guitar, acting as a moveable nut.

Analog (Analogue)
Representative, continuous changes that relate to another quantity that has a continuous change.

Brooks Hi Fi speakers Foot Pedal
1) An effects device where the amount of the effect can be controlled by a musician with his foot.
2) The beater mechanism of a foot drum that is activated by the drummer's foot to play the drum.
3) Any device, like a volume control, that can be operated by the foot.

IC
Abbreviation of Integrated Circuit (A miniature circuit of many components that is in small, sealed housing with prongs to connect it into equipment).

Brooks Hi Fi reviews Electrostatic Charge
The excess or deficiency of electrons in a given area.

Electromagnetic Field
Magnetic energy put out because of current travelling through a conductor.

Alternating Current
Electric current which flows back and forth in a circuit.

Format
1) The number of tracks, their width, spacing and order for tape recording.
2) To prepare a digital storage medium so that it will accept and store digital information bits.