Which has a bigger cup — Bach 5GS (large shank) or Giardinelli 4D?

The Bach 5GS (large shank) has a cup diameter of 25.50 mm / 1.0039 in compared to 25.40 mm / 1.0000 in on the Giardinelli 4D — a difference of 0.10 mm / 0.0039 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 5GS (large shank) and Giardinelli 4D?

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

Bach 5GS (large shank) vs Giardinelli 4D

Name: Giardinelli 4D
Brand: Giardinelli

The Bach 5GS (large shank) has a wider cup diameter, the Bach 5GS (large shank) has a larger throat opening.

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

Bach 5GS (large shank)

• Trombone

Material—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

📣High-volume projection — open throat for power

Mouthpiece B

Giardinelli 4D

• 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.

Open in interactive tool + Add third mouthpiece Bach 5GS (large shank) details Giardinelli 4D details Bach 5GS (large shank) equivalents Giardinelli 4D equivalents

Bach 5GS (large shank) vs Giardinelli 4D

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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