YBB-621 BBb Tubas

	YBB-621	YBB-621S
規格
調性	Bb	Bb
揚聲口直徑	366mm (14 3/8")	366mm (14 3/8")
管徑	17.5-18.5mm (0.689-0.728")	17.5-18.5mm (0.689-0.728")
外觀	Clear lacquer	Silver-plated
吹嘴	BB-67C4	BB-67C4
樂器盒	Included	Included
規範
琴身	Yellow brass	Yellow brass
Specifications
Height	825mm	825mm
Valves	4 front pistons	4 front pistons