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Bach 8½A vs Conn Connstellation 9CW

The Bach 8½A has a wider cup diameter, the Conn Connstellation 9CW features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.
Mouthpiece A
    Bach 8½A
    • Cornet
    Rim width—
    vs
    Mouthpiece B
      Conn Connstellation 9CW
      • Cornet
      Lead
      Rim width—
      Best suited for
      📋Trumpet players seeking precise matched dimensions
      🎶Size 9 (15.88mm); larger cup; fuller lower register; Wide rim; larger rounded inner radius; less bit

      Which is better?

      Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.

      Open in interactive tool + Add third mouthpiece Bach 8½A details Conn Connstellation 9CW details Bach 8½A equivalents Conn Connstellation 9CW equivalents

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