The Mercer & Barker MB7 “Lake Monster” is the ultimate contrabass tuba mouthpiece engineered for players who demand maximum depth and openness in the low register. Developed in collaboration with the tuba section of the Five Lakes Silver Band, the MB7 takes the foundational power of the MB6 Goliath and pushes it further, making it a specialty tool for an enormous, organ-like foundation in large ensembles.
The MB7 is built for an expansive sound, featuring the same 33.5 mm cup diameter as the MB6, but pairing it with an extremely generous 8.9 mm throat and an exceptionally open backbore. The rim maintains comfort with a width of approximately 7.75 mm, utilizing a unique profile designed to facilitate greater lip movement for expressive vibrato and enhanced flexibility. This combination dramatically reduces resistance, resulting in a truly free-blowing experience.
Cup Diameter: 33.5 mm
Throat: Approx. 8.9 mm (Larger than MB6)
Rim Width: Approx. 7.75 mm
Finish: High-polish silver plate (Standard large tuba shank)
Players stepping up to the Lake Monster will immediately notice an unclamped and powerful low and pedal register, delivering a dark, very broad sound that is perfect for foundation laying. Its design rewards substantial air support and relaxed chops with an effortless response and a very wide dynamic range.
The MB7 is the logical "step beyond" the MB6 for those who enjoy exploring the extremes of mouthpiece design and maximizing low-end breadth.
This mouthpiece is a specialist’s choice, perfectly targeting BBb and big CC tubas in brass band and expansive orchestral or wind ensemble settings. If your goal is an effortlessly powerful, fortissimo tutti sound that moves massive amounts of air without feeling choked, the MB7 Lake Monster delivers.
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