The Master Control Knob (Mck); Basic Operations - Gibson Electric guitar Owner's Manual

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THE MASTER CONTROL KNOB (MCK)

The Master Control Knob not only serves as the master control for all aspects of this
amazing, self-tuning system, but it will communicate with you as you learn its "language."
The MCK is quite powerful and has many uses, and we believe you will find that MCK
functions will become second nature to you once you have tried them a few times.
Caution: Do not attempt to manually turn the Powerheads unless they are pulled away from the
peghead so they are in the disengaged position! Otherwise the Powerheads can be damaged.

BASIC OPERATIONS

The Robot Guitar's Master-Control Knob (MCK) is what is commonly referred to as a
"push-pull" knob. When in the normal position, it behaves as a regular volume or tone
pot, depending on which series you have. When the MCK is pulled out, the system
is activated.
When the system becomes active by pulling out the MCK, it immediately places your
instrument in 'Standard Tuning Mode' at A440 (unless you have changed tuning defaults,
see page 46), but six factory presets have been provided for your use. Each preset can be
changed to your liking, but you can always restore the factory defaults as later described
in this Owner's Manual.