YOB-831
| YOB-831 | ||
|---|---|---|
| System | Conservatoire (semi-automatic octave system) | |
| Bore Style | European | |
| Keys | Auxiliary Keys | 3rd octave key, Left-hand F key, Adjustable Fork F resonance key, B resonance key, philadelphia D key |
| Trill Keys | Low B-C#, low C-Db, C#-D#, D#-E, F#-G#, G#-A, Ab-Bb, A#-B, B-C#, left C-D, rightC-D | |
| Pads | cork and leather | |
| Material | Body | Grenadilla |
| Keys | Silver-plated nickel silver | |
| Case | Deluxe, multi-functional case (OBC-830II) and case cover (OBB-830II) | |
| Toneholes | Undercut with innovative uppercuts | |
| Thumb-rest | Fixed | |
