Quality brass mouthpieces contribute to the high regard Yamaha has earned among beginning and professional musicians alike. The result of a special approach to design and manufacture, Yamaha mouthpieces deliver the performance and comfort required where they are needed most: where instrument meets musician. The mouthpiece production technique used by Yamaha promises consistent quality mouthpieces, time after time. Other manufacturers use a specific cutting tool to create every mouthpiece, which causes problems as tools start to wear. This can result in inconsistent quality and poor performance. Yamaha's computer-aided design system and computer controlled lathe work together to produce the most precise, consistent mouthpieces in the world. | Bass Trombone | | Model | Rim | Cup Depth | Throat | Backbore | Playing Charateristics | | Inner Diameter | Contour | Thickness | | 58 | 26.84 | standard | standard | standard | 7.25 | semi-wide | Medium cup and rim for easily playability through the low and middle registers. Crisp attack with outstanding flexibility. | | 59 | 27.22 | standard | semi-thin | standard | 7.25 | semi-wide | Relatively thin rim. Rich sound even on pedal tones. Voluminous cup for solid lows and plenty of power. | | 60B | 27.83 | standard | semi-thick | semi-shallow | 6.92 | semi-wide | A German-style combination of fairly thick rim with relatively shallow cup. Excellent flexibility. Easy playability and clear tone in the middle and low registers. | | 60 | 28.25 | standard | thin | standard | 8.1 | wide | Very deep cup with a large throat and backbore. Powerful, deep, low tone. | | 
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