Hmm? I guess I better get my 2 cents in. Seems to me, if the principal by which this thingee works, is to heat the strings to lower them into pitch; then I suspect a change in the piano wire tempering would occur. If that were the case, then them puppies'd need restringing often. Also, the current running through the strings would need to be extremely low, else the usual "string strummers" would get a good jolt. :-) All this, to me, is an exercise in stupidity. Oh well, it's his money, let him throw it after naught. Regards, Joe Garrett, RPT, (Oregon)
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