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Anti-Feedback
Use this search-and-destroy Anti-Feedback fi lter in addition to the Phase switch.
1. Move Anti-Feedback switch left to On position and push the Measure button
once. The tuner display will animate to indicate it is searching for feedback.
2. Turn up Volume, then either dampen the strings while tapping the body or
play the troublesome note until the feedback begins. The fi lter will automatically
identify and eliminate the feedback. The circuit will hold this offending frequency
in memory until you push the Measure button again.
Battery Replacement
Pull the small tab at the top of the Onboard Aura toward you. The body of the
preamp will swing out, revealing the battery compartment. Observe the polarity
marks on the battery compartment and install a fresh 9V battery. We recommend
a lithium battery for extended battery life.