Do you have a question about the Ibanez AEQ-SP1 and is the answer not in the manual?
Controls the overall gain of the Pre-Amp.
Controls the boost/cut of the treble frequencies.
Controls the boost/cut of the midrange frequencies.
Controls the boost/cut of the bass frequencies.
Reverse the phase to reduce feedback.
Pressing this button alternately turns the tuning meter ON/OFF.
These LEDs indicate the note of the strings you are playing.
Indicates if the string pitch is flat, in tune, or sharp.