YSH-301 Sousaphones
| YSH-301 | YSH-301S | ||
|---|---|---|---|
| Key | Bb | Bb | |
| Body | ABS resin bell, FRP body | ABS resin bell, FRP body | |
| Bell Diameter | 663mm (26 1/8") | 663mm (26 1/8") | |
| Bore Size | 18.5mm (0.728") | 18.5mm (0.728") | |
| Valves | 3 pistons | 3 pistons | |
| Finish | Clear lacquer (Slides, valve casing and leadpipe) | Silver-plated (Slides, valve casing and leadpipe) | |
| Weight | 9.1kg | 9.1kg | |
| Mouthpiece | BB-67C4 | BB-67C4 | |
