- Finger style: German system
- Tuning: Bb
- Number of keys: 20
- Rings: 6
- Material: African blackwood
- Finish: Natural
- Keywork material: Nickel silver, plated
- Mouthpiece: M3D
- Barrel: 56 mm
- Thumb hook: Adjustable thumb hook with ring
- Accessories: Backpack, mouthpiece, care products
Yamaha YCL-457II-20 · Clarinet
Noticeable technical changes are the F-lifter left instead of Eb-lifter.
In order to simplify addressing mainly the middle and high position, Yamaha has slightly reduced the bore and changed the over-blow hole.
For a better grip and easier covering, the thumb hole was raised to a flat plateau, from which also the lever of the over -blow key is accessible.
An important improvement also is the Eb/B-side key whose high cork was frequently damaged by beginners during assembly, is now provided with a metal base for stability.
The coupling of the so-called "short" A key with the G-sharp key enhances the sound of the tones A and B and facilitates the G#-A trill.
Instead of natural cork Yamaha now uses a synthetic cork for padding and tuning of the mechanics which is more durable and the adjustment lasts longer and stays reliably constant.
In addition, the new thumb rest adjustable over 12mm, has a more stable base plate, a larger and more comfortable support surface for the thumb and a stable ring for the carrying cord.
Clarinet · Yamaha YCL-457II-20
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