Fender MUSTANG LT25 Quick Start Manual page 9

USING THE TAP BUTTON USING THE TAP BUTTON
The TAP LED blinks with the tempo of the delay time
parameter. To set a new tap tempo; either scroll to the time
parameter and use the ENCODER to change the value, or
press the TAP BUTTON at the desired tempo (at least twice).
DELAY
LEVEL 6.2
TIME 512.0ms
FEEDBACK 4.1
TONE 3.7
Press and hold the TAP BUTTON for quick-access of the
built-in TUNER.
TUNER
A