Detail 01
24 throat
Wider than the 27-throat C models in this series. More air moves through, so the sound opens and resistance drops.

Independent shopping perspective
Silver-plated Schilke Symphony M-series trumpet mouthpiece, M1 star. M1 rim and cup with a larger Schmidt backbore and 24 throat, for players who want an open blow.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Wider than the 27-throat C models in this series. More air moves through, so the sound opens and resistance drops.
Detail 02
The taper past the throat is wide. That is where most of the free-blowing feel comes from, more than the throat itself.
Detail 03
Same rim and cup as the plain M and MD models. Only the backbore size and throat length change.
Detail 04
Air reaches the wide backbore sooner, which is the main reason this feels looser than the M1C or M1D.
Detail 05
Bowl-shaped rather than funnel, so attacks stay defined instead of soft-edged.
Detail 06
Largest rim diameter in the M line, above the 2, 3, 5 and 150 sizes. More lip inside the cup.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Same rim and cup. The M1 has a 24 throat with a large Schmidt backbore and blows openly. The M1C has a tighter 27 throat and Schilke C backbore, giving more resistance.
Star models carry the rim and cup of the M and MD versions but add a larger Schmidt backbore and a shorter throat, producing less resistance and a more open feel.
Yes, on any trumpet with a standard receiver. Choosing between M models is about resistance and rim size, not the key of the horn.
Those are the same concept in smaller rim diameters — number 2 and number 3 respectively. All three use the 24 throat and larger Schmidt backbore.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.