My recently acquired BTB675 is doing something a bit odd. When the E and A strings are played open, it sounds like a chorus pedal is being used. It only affects those two strings when open. No weird buzzing or anything anywhere else. It's apparent both acoustically and electrically.
I've tried holding the saddles, the strings behind the nut, any unplaed strings, etc. as I play an open note, and nothing seems to affect it.
Any clues as to where to start looking?
The sound itself is actually quite pleasant (), but I'll be damned if I want a chorus effect on open E and A notes all the time.
To me it sounds like the intonation is off or slightly out. That would be the first thing I would check.