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Endpin jack 

Plug a standard instrument cable from the endpin jack to a stage 

amp, a DI, or an unbalanced microphone input on a mixer. When 

they are plugged in, the preamp switches on. To conserve battery 

life, remember to unplug the endpin jack when you are not using 

the pickup system. It is a good idea to turn down your amp or mixer

input before you plug into the endpin jack input. This will protect 

your speakers (and your ears) from loud pops. 

Features 

Low Battery Light 

This light has two distinct functions:

1. Power Up Indicator

The Low Battery LED will flash briefly when you plug in your 

guitar. Some people ask us, “Why doesn’t this light stay on, like 

a conventional pilot light?” We believe that a steadily lit LED 

devours too many precious hours of battery life. Since the light 

flashes briefly only when the unit turns on, battery power is 

conserved and battery life is extended. 

2. Low Battery Warning

When the Low Battery LED lights steadily, it is time to change 

the battery.

Volume

For the cleanest signal, set the volume as high as possible without 

distorting your amp or mixer.

Classic 4 User’s Guide 

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