The Mercer & Barker MB4 Tuba Mouthpiece is precision-engineered for the demands of the modern tuba soloist, making it the prime choice for F and EEb tubas. Developed with solo performance in mind, the MB4 retains the signature heavy-weight build quality of Mercer & Barker, providing a solid core to the sound while focusing on ease and brilliance in the upper register.
The MB4 is designed with a slightly shallower cup profile that directly contributes to a brighter, lively sound that cuts and projects exceptionally well—ideal for solo work and small ensembles where definition is key. The bore is meticulously sized to promote very clear articulations and enhanced flexibility across the range. The comfortable 8.00 mm rim is shaped to provide maximum comfort and endurance during long rehearsals or demanding performances.
The cup diameter is 31.70 mm and the bore (throat) is 8.30 mm. The key benefit of the MB4 is its exceptional clarity and projection in the upper register. If your primary focus is on technical agility and a bright, singing solo tone on your small tuba, the MB4 is your essential companion.
Specifications:
Inner Diameter: 31.7mm/1.25in
Rim: 8.0mm/.31in
Throat: 8.3mm/.33in
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