Detail 01
.630 inch cup diameter
The smallest in the Standard series. Less lip vibrating means less effort up high, but noticeably less low-register body.
Product detailSKU #1275776904134
SchilkeStandard Series Trumpet Mouthpiece Group I 6A4a Silver
Independent shopping perspective
The Korena take
Schilke 6A4a in silver plate. Small, shallow mouthpiece with a cushion rim and tight backbore, made for players who live in the extreme upper register.
Strong match
Who this is for
- Lead trumpet in big band or commercial horn sections
- Players who need screaming high notes night after night
- Doublers who want a dedicated high-register piece
Consider the trade-offs
When to look elsewhere
- Concert band and orchestral players needing a full, dark tone
- Beginners — the shallow cup masks fundamental technique problems
- Anyone wanting one mouthpiece for all playing situations
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
Shallow A cup
Minimal volume before the throat. Bright and cutting, easier top range, thinner sound in the staff.
Detail 03
Number 4 cushion rim
Wide, semi-flat rim that spreads pressure across more of the lip. Buys endurance on long high sets.
Detail 04
27 throat
Slightly larger than the 26 on standard-cup models, offsetting some resistance the shallow cup adds.
Detail 05
a-backbore
Tight backbore that adds resistance behind the shallow cup, concentrating the sound and supporting the top end.
Final check
Know before you order
- 01Mouthpiece only. No pouch or case included.
- 02The cushion rim feels very different from a standard rim — expect an adjustment period.
- 03Keep your regular mouthpiece for concert and legit playing.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will this give me high notes right away?
It reduces the effort up high, but it doesn't build range. The shallow cup and small diameter help players who already have the chops and air behind them.
02What's the difference between the 6A4a and the 13A4a?
Both use the shallow A cup, number 4 rim and tight a-backbore. The 6A4a is smaller at .630 inch versus .660, so it pushes further toward extreme high register.
03Can I use it as my only mouthpiece?
Not recommended. The shallow cup gives up low-register body and tonal weight, which makes concert band and orchestral work harder than it needs to be.
04What does the cushion rim actually do?
The number 4 rim is wide and semi-flat, spreading mouthpiece pressure over more lip area. That reduces cutoff on long sets, though it can dull articulation feel.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Silver
23 detailsOther
- 9
- 16.33 mm, .643 inch cup diameter; 26 throat. Standard characteristics allow for a full penetrating tone quality.
- 11
- 16.53 mm, .653 inch cup diameter; 26 throat. A superior mouthpiece with standard characteristics for a free-blowing mouthpiece.
- 12
- 16.69 mm, .657 inch cup diameter; 26 throat. A traditional medium size mouthpiece that includes a number 3 standard rim and c-backbore, which allows the player a full spectrum of sound.
- 13
- 16.8 mm9mm, .665 inch cup diameter; 26 throat. Ideal choice for a student or developing player with standard number 3 rim contour. The rounder rim provides increased flexibility and quick response. The C cup offers volume for tone.
- 13b
- 16.77 mm, .660 inch cup diameter; 26 throat. This mouthpiece has a B cup that is slightly deeper than the 13A4 and also offers a narrower round rim.
- 11ax
- 16.51 mm, .650 inch cup diameter; 27 throat. This model was developed for the Schilke piccolo trumpets. The x-backbore improves the ease of playing and opens up the sound on a piccolo trumpet.
- 6a4a
- 15.99 mm, .630 inch cup diameter; 27 throat. Shallow A cup with cushion number 4 rim for extreme high register work.
- 11a
- 16.51 mm, .650 inch cup diameter; 26 throat. This rim size and contour is similar to the model 11 mouthpiece, but with a shallower A cup.
- 13a4
- 16.76 mm, .660 inch cup diameter; 27 throat. Same as the 13A4a, but with a standard c-backbore which allows a free-blowing feel.
- 12a4
- 16.71 mm, .658 inch cup diameter; 27 throat. This mouthpiece is the same as a 12A4a, but with a standard c-backbore.
- 12b4
- 16.71 mm, .658 inch cup diameter; 26 throat. This medium-small conical B cup provides a full tone and the number 4 semi-flat rim allows for more endurance.
- 10a4
- 16.43 mm, .647 inch cup diameter; 27 throat. Same as the 10A4a but with a standard c-backbore, which offers less resistance.
- 11e
- 16.58 mm, .653 inch cup diameter; 26 throat. The large funnel-shaped cup encourages a big round tone, ideal for cornet.
- 10a4a
- 16.43 mm, .647 inch cup diameter; 27 throat. The combination of the shallow A cup, semi-flat number 4 rim and tight a-backbore assists with upper register work.
- 10b4
- 16.43 mm, .643 inch cup diameter; 26 throat. A medium-small funnel-shaped B cup offers both a quality sound and support in the register.
- 13a4a
- 16.76 mm, .660 inch cup diameter; 27 throat. The shallow A cup, semi-flat number 4 rim and tight a-backbore creates an ideal lead mouthpiece.
- 8 Mma4
- 16.25 mm, .640 inch cup diameter; 26 throat. The slightly funnel-shape cup at the entrance to the throat provides a good tone and the number 4 semi-flat rim gives superior endurance.
- 12a4a
- 16.71 mm, .658 inch cup diameter; 27 throat. Similar to the 12B4, but with a shallow A cup and tight a-backbore, which adds both endurance and range.
- 11d4
- 16.58 mm, .653 inch cup diameter; 26 throat. Slightly deeper than the model 11 with a number 4 semi-flat rim, which provides a definite cushion feel for endurance.
- 7b4
- 16.08 mm, .633 inch cup diameter; 26 throat. Excellent for the player with thin lips. Number 4 rim provides good endurance with a brilliant tone.
- 8 Mme2
- 16.15 mm, .636 inch cup diameter; 26 throat. The deep funnel-shaped cup provides a smooth tone and is very flexible in all registers. Recommended for cornet players
- 9c4
- 16.36 mm, .644 in cup diameter; 26 throat. Like the 9 mouthpiece, however the 4 semi-flat rim provides excellent endurance.
- 11c2
- 16.51 mm, .650 inch cup diameter; 26 throat. Similar to the model 11 featuring a slightly rounded number 2 rim contour.
