Detail 01
.624 inch cup diameter
Smallest in the group and .046 inch under the all-around 14. That is a large gap in rim terms.
Product detailSKU #1275776904296
SchilkeStandard Series Trumpet Mouthpiece Group I in Gold 5A4 Gold
Independent shopping perspective
The Korena take
The smallest cup in Schilke's Group I at .624 inch, gold-plated. A dedicated upper-register piece, commonly used on piccolo trumpet.
Strong match
Who this is for
- Piccolo trumpet players wanting a small-diameter dedicated mouthpiece
- High-register work where a full-size cup wears you out
- Doublers who want a clearly different feel from their main piece
Consider the trade-offs
When to look elsewhere
- Full-time Bb playing — .624 is far under the .670 middle
- Players with fuller lips; small diameters crowd the embouchure
- Anyone looking for one mouthpiece to cover everything
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
A cup
Schilke's shallow cup designation, shared with the 6A4a and 14A4a. Less volume under the lip.
Detail 03
4 rim
The semi-flat contour Schilke pairs with endurance across the line, rather than the rounder standard #3.
Detail 04
26 throat
Standard throat, not the tighter 27 used on the a-backbore models. Less restriction than the dedicated lead pieces.
Detail 05
Standard Series, not Heavyweight
Regular blank mass. The Heavyweight models are a separate set with extra metal around the same dimensions.
Detail 06
Popular on piccolo
The pieces designed specifically for Schilke piccolos are the x-backbore 11Ax and 14A4x, which blow more openly.
Final check
Know before you order
- 01Mouthpiece only — no case, pouch or cleaning brush.
- 02If it's for piccolo, confirm the shank your horn takes before ordering.
- 03Small diameters expose weak embouchure habits. Expect an adjustment period.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use this on a regular Bb trumpet?
Yes, it's a trumpet mouthpiece. At .624 inch it's small for full-time Bb work, so most players keep it as a high-register or piccolo piece.
02What does 5A4 mean?
5 is the cup diameter step, A is Schilke's shallow cup, and 4 is the semi-flat rim contour used on the endurance-focused models.
03Is there a version with a tighter backbore?
Not this model. The tight a-backbore pieces are the 6A4a, 10A4a, 12A4a, 13A4a and 14A4a.
04Does gold plating change the dimensions?
No. Cup diameter, rim and throat are the same regardless of plating. The difference is the finish and the price.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsBody & build
- Color
- Gold
32 detailsOther
- 9
- 16.33mm, .643 inch cup diameter; 26 throat. Standard characteristics allow for a full penetrating tone quality.
- 11
- 16.53mm, .653 inch cup diameter; 26 throat. A superior mouthpiece with standard characteristics for a free-blowing mouthpiece.
- 12
- 16.69mm, .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
- 16.89mm, .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.
- 14
- 17.02mm, .670 inch cup diameter; 26 throat. With a standard rim, cup and backbore, this model is an excellent choice for all-around playing.
- 13b
- 16.77mm, .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.
- 14a4a
- 17.09mm, .673 inch cup diameter; 27 throat. A very popular mouthpiece, the 14A4a offers a shallow A cup, semi-flat number 4 rim and tight a-backbore, which allows a player a strong upper register without sacrificing tonal production.
- 11ax
- 16.51mm, .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
- 15.99mm, .630 inch cup diameter; 27 throat. Shallow A cup with cushion number 4 rim for extreme high register work.
- 11a
- 16.51mm, .650 inch cup diameter; 26 throat. This rim size and contour is similar to the model 11 mouthpiece, but with a shallower A cup.
- 14a4
- 17.09mm, .673 inch cup diameter; 27 throat. Same as the 14A4a, but with a standard c-backbore that offers a more open feel.
- 13a4
- 16.76mm, .660 inch cup diameter; 27 throat. Same as the 13A4a, but with a standard c-backbore which allows a free-blowing feel.
- 12a4
- 16.71mm, .658 inch cup diameter; 27 throat. This mouthpiece is the same as a 12A4a, but with a standard c-backbore.
- 13c4
- 16.89mm, .665 inch cup diameter; 26 throat. The somewhat sharp inner-edge combined with a funnel-shaped C cup offers a clear tone. The number 4 semi-flat rim adds increased endurance.
- 14c2
- 17.02mm, .670 inch cup diameter; 26 throat. This C cup and number 2 semi-rounded rim produces a rather large tone and good center.
- 10a4
- 16.43mm, .647 inch cup diameter; 27 throat. Same as the 10A4a but with a standard c-backbore, which offers less resistance.
- 11e
- 16.58mm, .653 inch cup diameter; 26 throat. The large funnel-shaped cup encourages a big round tone, ideal for cornet.
- 10a4a
- 16.43mm, .647 inch cup diameter; 27 throat. The combination of the shallow A cup, semi-flat number 4 rim and tight a-backore assists with upper register work.
- 12a4a
- 16.71mm, .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.
- 7b4
- 16.08mm, .633 inch cup diameter; 26 throat. Excellent for the player with thin lips. Number 4 rim provides good endurance with a brilliant tone.
- 11c2
- 16.51mm, .650 inch cup diameter; 26 throat. Similar to the model 11 featuring a slightly rounded number 2 rim contour.
- 14b
- 17.02mm, .670 inch cup diameter; 26 throat. Similar to the model 14, but with a B cup that is medium-small size.
- 12b4
- 16.71mm, .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.
- 8e2
- 16.15mm, .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
- 13d4
- 16.89mm, .665 inch cup diameter; 27 throat. Best option for a player looking for a thick, rich, weighted sound. Medium-large D cup offers a tone that is colorful with depth. The number 4 semi-flat rim affords comfort with a sharper bite for superior articulation clarity. The cup diameter is ideal for all players from student to professional.
- 10b4
- 16.43mm, .643 inch cup diameter; 26 throat.A medium-small funnel-shaped B cup offers both a quality sound and support in the register.
- 13a4a
- 16.76mm, .660 inch cup diameter; 27 throat. The shallow A cup, semi-flat number 4 rim and tight a-backbore creates an ideal lead mouthpiece.
- 11d4
- 16.58mm, .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.
- 5a4
- 15.84mm, .624 inch cup diameter; 26 throat. Small cup diameter which aids upper register. Popular for use as a piccolo trumpet mouthpiece.
- 14a4x
- 17.09mm, .673 inch cup diameter; 27 throat. Based on the popular 14A4a, this mouthpiece creates a very open blowing feel with the large x-backbore. This backbore improves the ease of playing and opens up the sound of a piccolo trumpet.
- 9c4
- 16.36mm, .644 in cup diameter; 26 throat. Like the 9 mouthpiece, however the 4 semi-flat rim provides excellent endurance.
- 8a4
- 16.25mm, .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.
