Warburton Standard Series Tuba Mouthpiece Product Overview The Warburton Standard Series offers tubists exceptional tonal depth, precise manufacturing consistency, and effortless projection across all registers. Engineered in the USA with Warburton’s intuitive sizing system—where the model number represents the inner rim diameter in hundredths of an inch and the letter designates the cup depth—this lineup delivers a predictable, high-performance fit for brass performers. Whether performing in a symphonic band, brass ensemble, or solo setting, Warburton Standard Series mouthpieces feature a comfortable rim contour and balanced acoustic geometry designed to enhance tonal clarity and slotting accuracy. Available Model Variants Warburton 28M: Features a versatile 1.280" (32.50 mm) inner rim diameter paired with a Medium cup. The 28M provides excellent flexibility, swift response in the upper register, and clear articulation while maintaining a balanced, resonant core across CC, BBb, Eb, and F tubas. Warburton 30D: Features a roomier 1.300" (33.00 mm) inner rim diameter combined with a Deep cup. Designed for players seeking high-volume airflow and a spacious rim feel, the 30D delivers maximum low-register depth, dark orchestral fundamental, and broad acoustic projection. Key Features & Highlights Systematic Sizing: Intuitive rim size and cup depth designations make it easy to navigate and expand your mouthpiece setup as your performance needs evolve. Acoustic Versatility: Options ranging from medium cup profiles for balance and articulation to deep cup profiles for maximum fundamental resonance. Dual Shank Fitment: Available in Standard shank or European (Large) shank to ensure proper receiver fit across various tuba brands. Precision USA Craftsmanship: Machined to exacting tolerances in solid brass, available in durable silver plating or luxurious gold plating. Technical Specifications Comparison Specification 28M Model 30D Model Inner Rim Diameter 1.280" / 32.50 mm 1.300" / 33.00 mm Cup Depth Medium (M) Deep (D) Shank Options Standard or European (Large) Standard or European (Large) Finish Options Silver-Plated or Gold-Plated Brass Silver-Plated or Gold-Plated Brass Country of Origin USA USA Proposition 65 Warning Link