Detail 01
Size 7
A large-diameter, deep-cup tuba size. More air required, but more low-end and volume when you can feed it.
Product detailSKU #1274115060159
BachTuba/Sousaphone Mouthpiece 7
Independent shopping perspective
The Korena take
Bach 7 mouthpiece for tuba or sousaphone. A large, deep size aimed at players who need volume and low-register support.
Strong match
Who this is for
- Marching sousaphone players needing projection outdoors
- Concert tuba players wanting a fuller low register
- Replacing a lost or worn school-issue mouthpiece
Consider the trade-offs
When to look elsewhere
- Young players who struggle to fill a large cup
- Euphonium or baritone — wrong receiver size
- Players chasing an easy high register
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
Tuba/sousaphone shank
One mouthpiece covers both horns. Sousaphone and most BBb tubas share the same receiver taper.
Detail 03
Deep cup
Supports the pedal and low register with a broad sound. Costs some upper-register ease and takes more air.
Detail 04
Wide rim diameter
Spreads pressure over more lip area, which helps endurance on long marching sets but needs a developed embouchure.
Final check
Know before you order
- 01Confirm your tuba takes a standard large shank — some models differ
- 02Mouthpiece only. No pouch or brush included.
- 03A large size can set a young player back — check with their director
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Does this fit a sousaphone and a tuba?
Yes. Sousaphones and most BBb tubas use the same receiver, so one mouthpiece works on both. Check your specific horn's receiver first.
02Is size 7 good for a middle school student?
It's a large size that takes real air support. Many students start on a smaller mouthpiece and move up as their embouchure develops.
03Will this work on a euphonium?
No. Euphonium and baritone use a smaller shank. You'd need a euphonium mouthpiece.
04What does it change versus a smaller size?
More low-register depth and volume, at the cost of more air required and a harder upper register.
