Yamaha uses computer-controlled, leading-edge technology in order to provide mouthpieces that play well and have precise, consistent sizes. We have succeeded in improving the cutting precision tolerance for the cup and rim to 0.01 mm or better. This not only ensures an extremely precise shape, but provides a machined surface that is glossy and incredibly uniform. At the same time, we have worked hard to eliminate inconsistencies. We carefully check the throat diameter, shank diameter, and other critical points on each mouthpiece using special gauges. Our advanced quality control measures include micron-level precision tolerances.

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