YBB-201MS YBB-201M 規格 調性BbBb 揚聲口直徑443mm (17 1/2")443mm (17 1/2") 管徑18.5mm (0.728")18.5mm (0.728") 外觀Silver-platedClear lacquer 重量9.0kg9.0kg 吹嘴BB-67C4BB-67C4 樂器盒IncludedIncluded 規範 琴身Yellow brassYellow brass ...