7
Power
Plug in the guitar, and the Prefi x Premium S-O-B switches on. The Battery LED
will fl ash once at power-up to tell you the preamp is on.
Low Battery Indicator
When the
Battery
indicator lights steadily, it is time to change the battery. To
conserve power, unplug the instrument and turn off the tuner when not in use.
Replace the battery by fl ipping open the preamp body using the latch located at
the top of the preamp. Be sure to observe the correct polarity during this instal-
lation.
