Which has a bigger cup — Bach 6 or Giardinelli 5M?

The Bach 6 has a cup diameter of 25.50 mm / 1.0039 in compared to 25.00 mm / 0.9843 in on the Giardinelli 5M — a difference of 0.50 mm / 0.0197 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bach 6 and Giardinelli 5M?

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

Bach 6 vs Giardinelli 5M

Name: Giardinelli 5M
Brand: Giardinelli

The Bach 6 has a wider cup diameter, the Giardinelli 5M has a larger throat opening.

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

Bach 6

• Baritone / Euphonium

Backbore—

Best suited for

📣High-volume projection — open throat for power

Mouthpiece B

Giardinelli 5M

• Baritone / Euphonium

Backbore15/64" (.234)

Best suited for

📣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 6 details Giardinelli 5M details Bach 6 equivalents Giardinelli 5M equivalents

Bach 6 vs Giardinelli 5M

Playing Characteristics

What Do These Model Names Mean?

What Changes If You Switch?

Which is better?

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