YFB-621 F 調低音號

	YFB-621	YFB-621S
規格
調性	F	F
琴體	Yellow brass	Yellow brass
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")
高度	825mm	825mm
按鍵	4 front pistons + 1 rotary	4 front pistons + 1 rotary
外觀	Clear lacquer	Silver-plated
吹嘴	BB-67B4	BB-67B4
樂器軟袋	Included	Included