tuning keys are bad.
also i love my lr baggs para acoustic Di, eliminated my hum and feedback problems onstage. i also used one of those soundhole covers which helps also. i forget the name of it.
"Tone is in the instruments. Technique in the hands. Do what you will." ~quote from some guy at the TGP forum
"Without a doubt, the quality of your instrument will effect your tone, and any pickups, effects, amps, and microphones used along the way will also have an impact on the sound waves."~Cameron Mizell