YBB-321 Tubas en si doble bemol
| YBB-321 | YBB-321S | ||
|---|---|---|---|
| Tecla | Bb | Bb | |
| Diámetro del pabellón | 443mm (17 1/2") | 443mm (17 1/2") | |
| Tamaño de perforación | 18.5-19.5mm (0.728-0.768") | 18.5-19.5mm (0.728-0.768") | |
| Acabado | Clear lacquer | Silver-plated | |
| Boquilla | BB-67C4 | BB-67C4 | |
| Estuche | Included | Included | |
| Body | Yellow brass | Yellow brass | |
| Height | 1018mm | 1018mm | |
| Valves | 4 top pistons | 4 top pistons | |
