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Yamaha YBB-631S Professional Tuba
Hand-lapped Monel pistons resist corrosion and maintain a tight fit and smooth action over many years of heavy use. The valves are arranged with 3 top-action and the fourth side-action for fast, effortless fingering. Its yellow brass bell, gold brass lead pipe, and .689"-768" bore make it capable of a rich, full, very musical tone. Its compensating system ensures accurate tuning on all notes throughout the instrument's range, particularly in the difficult low range. Yamaha's advanced technology puts its silverplate among the finest. It produces a soft, rich tone ideal for subtle musical nuance and expression.This is a tuba that the most advanced player will find wonderfully responsive and satisfying to play.
Key of BBb. 4/4 size, .689"/.768" dual bore, 17-1/2" yellow brass bell, compensating system, 3 front-action and a 4th side-action Monel pistons, silver-plated finish. All Yamaha wind instruments come with a limited 5-year warranty.
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Standard Features
| Bell Size |
17 1/2" (445mm) |
| Bell Style |
Upright Bell |
| Bore |
.689"-768" (17.5-19.5mm) dual bore |
| Compensating |
Compensating |
| Finish |
Silver plated |
| Key |
BBb |
| Number of Valves |
4 valves |
| Piston Valves |
Monel |
| Valve Action |
Top Action |
| Valve Type |
Piston |
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