Well-tuned

You might not truly appreciate the difference unless you try an impeccably tuned recorder like the Aulos

It is actually YRA-302BIII that shipped and it has a cool Yamaha tuning fork logo on the mouth piece which looks way better than the image shown with this product

For some reason the soprano and alto in the 300 series have identical tuning issues in terms of the location of fingerings, the sound is nice, but it requires too many fingers to correct the tuning problems of high Eb, for example, I'd rather use the same fingerings across all my recorders, rather than having to compensate for poor tuning