Joe, you're right about the PT-100. We've had one in the shop for about 8 years, and found that it only good for chipping pianos. It has 6 pre-programed scales for Yamaha pianos. 3 verticals, and 3 grands, plus a "flat mode". But, even when using this device on the appropriate Yamaha pianos, we don't like quite how the octaves sound. It seems the Japanese like octaves a little narrower than "we" do. It is pretty much useless on any other pianos. Devlon
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