Detail 01
12C cup depth
Medium cup. Balanced tone with easier high notes and endurance than deeper Bach models like the 6-1/2A.
Product detailSKU #1274115059994
BachSmall Shank Tenor Trombone Mouthpiece 12C
Independent shopping perspective
The Korena take
Bach 12C small shank tenor trombone mouthpiece. The common all-purpose choice for students and section players on small-bore horns.
Strong match
Who this is for
- School band trombonists on a standard student horn
- Players wanting range and endurance over maximum low end
- A safe replacement when the original mouthpiece is lost or dented
Consider the trade-offs
When to look elsewhere
- Players chasing a big, dark orchestral low register
- Large shank bass or large-bore tenor trombones
- Anyone who already finds shallow cups too bright
What matters in use
The specifications, translated
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 02
V-shaped throat and backbore
Keeps the sound from going harsh. Rounds off attacks while staying responsive at moderate volume.
Detail 03
Medium rim diameter
Comfortable for developing players. Less lip inside the cup, so slurs and upper range come more easily.
Detail 04
Small shank
Matches small-bore tenor trombones, the standard for student and intermediate horns. Not for large shank receivers.
Detail 05
Silver-plated brass
Standard durable finish. Survives daily case handling; rim plating wears over years of steady playing.
Final check
Know before you order
- 01Verify small shank versus large shank before ordering — they are not interchangeable
- 02Sold as the mouthpiece only, no pouch or case
- 03A dented or worn rim on your old piece is the usual reason tone changed, not the horn
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Is 12C the standard trombone mouthpiece?
It is the most common starting point for student and intermediate tenor trombone. Most school programs and beginner horns are built around this size.
02What is the difference between 12C and 6-1/2A?
The 12C is shallower with a smaller rim, favoring range and endurance. The 6-1/2A is deeper and wider, giving a darker sound with more low-register body.
03Will this fit a bass trombone?
No. Bass trombones use large shank receivers and much larger mouthpieces. This is made for small shank tenor trombones.
04How often should a mouthpiece be replaced?
Only when the rim plating wears through, the shank is dented, or the bore is damaged. A well-cared-for mouthpiece lasts many years.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsPlayability
- Neck Shape
- V
