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Bob Reeves 4G/JF vs Giardinelli Sym. T

The Bob Reeves 4G/JF has a wider cup diameter.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material
Mouthpiece A
    Bob Reeves 4G/JF
    • Trombone
    Cup diameter26.00 mm / 1.0236 in
    Cup depthDeep
    Rim width—
    Throat diameter—
    Backbore—
    Finish—
    Material—
    Best suited for
    🎻Orchestral playing — large cup for full, dark tone
    vs
    Mouthpiece B
      Giardinelli Sym. T
      • Trombone
      Cup diameter25.80 mm / 1.0157 in
      Cup depthDeep
      Rim width—
      Throat diameter6.40 mm / 0.2520 in
      Backbore1/4 (.250)"
      Finish—
      Material—
      Best suited for
      🎻Orchestral playing — large cup for full, dark tone
      📣High-volume projection — open throat for power

      Cup Diameter

      The Bob Reeves 4G/JF has a cup diameter of 26.00 mm / 1.0236 in compared to 25.80 mm / 1.0157 in on the Giardinelli Sym. T — a difference of 0.20 mm / 0.0079 in. A wider cup generally produces a fuller, darker tone but requires more air support.

      Cup Depth

      Both mouthpieces share a deep cup depth, so the sound character from depth alone will be very similar.

      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 Giardinelli Sym. T details Bob Reeves 4G/JF equivalents Giardinelli Sym. T equivalents

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