I’ve owned a Reyburn Cyber Tuner for the last year. Pretty cool little device and very informative to let you know what is going on when one tunes a piano. I’m far from being one of those egg head electronic tuners that are so common at the conventions, but have gotten a little way into it. One observation: the standard tunings that come in these things stretch the octaves way too much for my ear. I think it  is really the drift in the country towards the loud, harsh sound you hear so often. I just don’t think the octaves on a concert grand should beat…it’s just not natural or musical. When I check my aural octaves to the standard tuning in the RCT, I’m flat by a very consistent, and very small amount. Must be my Viennese training. I took Ferdinand Braeu, the Bosendorfer technical director to see a