Bob Reeves 4G/JF vs Bob Reeves 4G

the Bob Reeves 4G features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
The taper behind the throat leading to the shank. Affects projection and tone character.
Mouthpiece A
    Bob Reeves 4G/JF
    • Trombone
    Backbore
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    vs
    Mouthpiece B
      Bob Reeves 4G
      • Trombone
      Backbore
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone

      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 4G/JF details Bob Reeves 4G details Bob Reeves 4G/JF equivalents Bob Reeves 4G equivalents