The Yamaha YBB-621S is a compact 3/4-size professional BB♭ tuba finished in elegant silver plate. Known for its precise intonation, smooth valve action, and warm centered tone, it is favored by soloists, chamber players, and professional orchestral musicians who require portability without sacrificing sound quality.
Key Features:
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Key: BB♭
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Size: 3/4 Tuba (compact, lightweight, highly portable)
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Valves: 4 front-action piston valves (hand-lapped)
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Bore Size: 18.5 mm (0.728″)
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Bell Diameter: 366 mm (14 3/8″)
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Body Material: Yellow brass
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Finish: Silver-plated
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Mouthpiece: Yamaha 67C4
Specifications:
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Intonation: Stable and accurate
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Tone: Warm, full-bodied sound despite compact size
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Ideal for: Solo performance, chamber music, professional use
