Yes I have used it. No I do not think it really works at all. In fact I think this tool is more likely to exasperate a problem. You may get the feeling of some slight improvement for very short term on some notes, but IME the term is so short that by the time you finish a tuning if you go back and check the same string its just as wavery as it was to begin with. Cheers RicB Has anyone out there ever used the false beat eliminator, and if so, does it really work? Jesse Gitnik NYC In it since 1980
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