Which has a bigger cup — Bob Reeves 4G/JF or Giardinelli Sym. T?

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.

How does cup depth compare between Bob Reeves 4G/JF and Giardinelli Sym. T?

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

Bob Reeves 4G/JF vs Giardinelli Sym. T

Name: Giardinelli Sym. T
Brand: Giardinelli

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

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

Base metal or construction (e.g. brass, stainless steel, plastic). Influences weight, response, and tone color.

Mouthpiece A

Bob Reeves 4G/JF

• Trombone

Material—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

Mouthpiece B

Giardinelli Sym. T

• Trombone

Material—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

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.

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Bob Reeves 4G/JF vs Giardinelli Sym. T

Playing Characteristics

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What Changes If You Switch?

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