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Triumph Series Bb 4/4 Tuba with Rotary Valves is a full size Bb tuba with an 18mm .709 inch bore, a 401.5mm 15.807 inch bell and high-precision rotary valves, in gold lacquer.
Full size and rotary valved, which is the combination a wind ensemble bass line actually wants.
This tuba is built for both aspiring and experienced players and works as the anchor of a band program. The full 4/4 size gives a commanding presence and a deep sound, the 18mm bore moves enough air for a robust tone, and the 401.5mm bell projects clearly in a concert hall or outdoors.
Rotary valves give smooth, quick action and reliable playability, and premium-grade brass stands up to daily use in an educational setting. Despite the full size the horn is designed to be comfortable to hold, which matters across a two-hour rehearsal.
| Key | Bb |
| Size | 4/4, full size |
| Bore | 18mm / .709 inch |
| Bell Diameter | 401.5mm / 15.807 inch |
| Valves | Rotary |
| Material | Premium grade brass |
| Finish | Gold lacquer |
| Warranty | Victory manufacturer warranty against defects in materials and workmanship |
| Built By | Victory Musical Instruments, Miami FL |
Why Rotary Valves Instead of Pistons?
Rotary valves turn rather than travel up and down, so the airway stays smoother and the action is quicker under the fingers. On a tuba, where the tubing is long and the air column is large, that translates into a more even response between notes. Rotary tubas are the standard in most European and orchestral settings.
Is a 4/4 Tuba Too Big for a High School Player?
Usually not by high school. Physical size and air capacity are the limits, and most players are ready by then. For middle school and younger the 3/4 Triumph Series tuba is the sensible instrument.
Who Is the Triumph Series For?
School band programs, first and second year students, church and community players, and anyone who needs a reliable instrument that survives a rehearsal room and a bus. Victory builds the Triumph Series to be repaired and maintained by a school tech, not treated as disposable.
| Key | Bb |
| Size | 4/4 |
| Bore | 18mm / .709 inch |
| Bell | 401.5mm / 15.807 inch |
| Valves | Rotary |