Gibson Guitars 1550-07 GUS User Manual
changed to your liking, but you can always restore the factory defaults as later described
in this Owner’s Manual.
The MCK’s LED display will show various symbols and colors and these will be explained in
the various modes of operation available to you. During the tuning process, they will behave
String LEDs Display Actions During Tuning Operations:
string not tuned = solid red
measuring frequency = red flashing
turning = yellow flashing
signal clipping = solid blue
string frequency at extreme range = solid purple
individual string in tune = solid green
all strings in tune = all LEDs flash blue 3 times
During the tuning process, the guitar will be nearly 100 percent muted. After the MCK is pushed
back in, full volume returns.