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Bob Reeves 43W/F vs Bruno Tilz 210-S 4 E

The Bob Reeves 43W/F has a wider cup diameter, the Bob Reeves 43W/F features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The internal diameter of the cup, measured at the widest point inside the rim.
Mouthpiece A
    Bob Reeves 43W/F
    • Flugelhorn
    Cup diameter17.07 mm / 0.6720 in
    vs
    Mouthpiece B
      Bruno Tilz 210-S 4 E
      • Flugelhorn
      Catalog
      Cup diameter16.50 mm / 0.6496 in
      Best suited for
      ⚡Screamer / high notes — tight throat with shallow cup

      Cup Diameter

      The Bob Reeves 43W/F has a cup diameter of 17.07 mm / 0.6720 in compared to 16.50 mm / 0.6496 in on the Bruno Tilz 210-S 4 E — a difference of 0.57 mm / 0.0224 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      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 Bob Reeves 43W/F details Bruno Tilz 210-S 4 E details Bob Reeves 43W/F equivalents Bruno Tilz 210-S 4 E equivalents

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