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ZOOM GFX-4
Operation
Guide
Operation Guide 4
Using the Tuner (Bypass/Mute) Function
3
4
When the GROUP/BANK indicator shows the
desired note, perform fine tuning while
watching the display.
After the GFX-4 is turned on, the tuner reference
pitch is always "440" (center A = 440 Hz). If
desired, you can change the reference pitch in 1
Hz steps over the range from "435" (center A =
435 Hz) to "445" (center A = 445 Hz).
Adjust the reference
pitch of the tuner
Use the / keys.
The GFX-4 returns to the program mode.
Return to program
mode
When tuning is completed, press any
foot switch.
The reference pitch is reset to "440" when
the unit is turned off and on again.
Pitch is
high
Pitch is
correct
Pitch is
low
Indication turns faster the more the
pitch is off.