Hi Ed... Using F2 / A4, then set A3 to A4 aurally. I used to do this quite a bit when I was practicing different ways of getting ready for that bit on the test. I didnt find any problems with it. All this said... I still think if you are going to use an aural source a loud enough pitch fork is really the best thing for the job. Easy to use, and inexpensive. What else can you ask for ? Cheers RicB Ric- You will hear a very, very loud beat at 880hz, and an almost inaudible beat at 440hz. Impossible to ignore the 880hz beat. The Seiko gives a harmonic series, so 440hz on the piano will be flat due to inharmonicity of the piano string. Ed
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