Double-Cup mouthpieces. Made in the USA by Conn-Selmer

for:    Trumpet, Cornet, Flugelhorn, Trombone, Tuba

          Sold by:  Gateway Music, Arizona USA

In business since 1980; same town; same owner. I accept PayPal. We ship all mouthpieces world-wide. 

Parduba double cup mouthpiece by CONN-SELMER made in USA

"Tradition reborn"

Scroll down for charts and ordering

John Parduba started making custom mouthpieces in 1915 then opened his original shop at 3rdAve, & 87 St., NYC. In 1918 where he fabricated trumpets and cornets of premium quality in addition to his mouthpieces and repair work.


In the early 30's Parduba moved to his new shop at 140 W 49th St., where in 1935 he introduced a remarkable new design in mouthpieces for brass instruments. This was the world famous "Double-Cup" which was unknown and not too popular until 1938 when Harry James discovered it while playing with the Benny Goodman Band across the street from Parduba's place at the Plymouth Hotel. As a result, the Parduba Double-Cup became an overnight success throughout the country with trumpet players in many top bands.

Name players such as Ziggy Elman and Ray Anthony started using the Parduba and in 1943 Louis Armstrong joined the club. The entire trumpet sections of several name bands were using these fine mouthpieces.

Because of the success of his mouthpieces, Parduba discontinued making trumpets and cornets and doing repair work and specialized only in making mouthpieces. Today, by all standards, the Parduba Mouthpiece is still one of the best and most popular.


The unusual patented design of the Parduba "Double-Cup" mouthpiece enables a great ease of playing in the high register. This is noticeable the very first time that one tries this mouthpiece. After adapting to this design, it is possible to attain excellent control, and a beautiful tone is often realized when using the larger sizes such as the numbers: 5, 6, and 7.

Although the cup appears to be very shallow, the lower half of the cup gives great length to the overall shape of this Double-Cup design which in turn produces a very brilliant yet rich melodic tone. One must be very careful not to overblow this mouthpiece since it takes much less effort to execute a tone than other types of cups.

Sizes run from the No. 1 to the No. 8, the higher numbers indicate the larger sizes. No. 7(16.89mm) cup diameter closest to a Bach No. 1 1/2(17.00mm), No. 6 (16.46mm) closest to a  Bach 7(16.20mm), a No. 5(15.85mm) is closest to a  Bach 10-1/2(15.90mm), and the No. 4(15.34mm) is closest to a Bach 12(15.20mm). See chart below.


Tone is produced by injecting air into the mouthpiece. What tones will be produced depends on how the column of air is introduced into the mouthpiece. Vibration of the upper lip is necessary to produce good tone. The higher the tone the more rapid must be the vibrations. But lip vibration does not suffice.

The low tones are produced by relaxing the lips and sending the column of air against the lower part of the cup. The medium tones or middle register are produced by slightly tensing the lips and directing the air straight into the hole at the bottom of the cup. The upper tones are secured by throwing the column of air higher into the mouthpiece. This tenses the upper lip and produces more vibration than for the middle register tones. The higher the tone desired the higher the air must be directed into the mouthpiece. For the extreme high tones the column of air must strike near the upper part of the cup - nearly at the rim. This further tenses the muscles of the upper lip and produces more rapid vibrations.

In ordinary mouthpieces in order to produce the high tones without resorting to the old hard-pressure system the performer usually relies on a shallow cup mouthpiece. This invariably results in the impairment of tone quality in the middle and low register.


Gives you two mouthpieces in one. The scientific reaming of the top of the cup furnishes the shallow tones and they come with the greatest of ease. G comes true. High B-flat comes as effortless and with as great volume as G is ordinarily produced. The extreme high tones, which occur occasionally in ordinary music and frequently in solo playing or in difficult passages, are produced  easily and with full volume because the shallow upper cup puts them within reach by increasing the performers range.

This is all accomplished with the Parduba Double-Cup Mouthpiece without sacrificing tone quality or volume in the middle and lower registers because the lower part of the cup is of the regular conventional bore.


Many a good instrument has been condemned and often discarded because the performer did not realize that the mouthpiece was not suitable. The Parduba Double-Cup Mouthpiece gives every instrument a fair test because it makes it possible to bring out all that is in the instrument.


The All purpose Mouthpiece Alone in its Greatness

Acclaimed by Brass Players as the Greatest and The most Sensational Mouthpiece Discovery of the age.

Designed scientifically to give you in one mouthpiece all the Outstanding Features which the ordinary mouthpiece cannot.
bulletClearer and Higher Tones.
bulletRich Full Penetrating Tones Throughout Entire Registers.
bulletEffortless Playing Ease.
bulletIncreased Endurance.
bulletBalanced Breath Control.


The Double-Cup Mouthpiece is arranged with two different chambers. A and B as Illustrated. The upper shallow cup (A) is for freedom one vibration of the lips and to permit getting high tones easily. The lower cup (B) is designed for the middle and low tones.

The formation of these two cups in respect to each other, is such that there is no waste of energy, such as results from unnecessary whirls or eddy currents of air vibrations. The air vibrations being produced by the lips on the Double-Cup Mouthpiece are directly transferred to the tone producing chamber, permitting the player to produce Rich, Full Penetrating Tones throughout entire registers; yet a pianissimo which is sweet and clear and which can instantly be increased to a double tone of surprising brilliance and volume. Endurance that will be increased beyond your greatest expectations. Effortless Playing Ease that will amaze you. Ease of playing Higher Tones that will thrill you.

Study the pictures illustrated, Compare them and see for yourself why this scientifically constructed mouthpiece makes it possible for you to get such remarkable results which are so hard for the ordinary mouthpiece to produce.

Let us prove to you that once you have played on a Double-Cup you will be as enthusiastic about this Natural Playing Mouthpiece as are the increasing thousands of Double Cup warts.

Not Genuine Unless Stamped with Name of our Firm
and Patent No. 2,018,738

To order call Lu @ (928) 635-9271 (Arizona).   I accept PayPal

We ship all mouthpieces worldwide.

Click here to order on my secure order form

Parduba Double Cup Trumpet/Cornet/Flugelhorn Mouthpieces

 Trumpet/Cornet $82 Flugelhorn $87 plus $5 s/h (USPS first class package-USA)

(World wide shipping via USPS "first class package International service" S/h $26 most countries)
0 14.27mm  9.53mm
1/2 14.27mm 10.77mm
1.0 14.38mm 10.57mm
1.5 13.77mm 10.24mm
2.0 14.48mm  9.75mm
2.5 15.04mm 10.9mm
3 14.68mm 11.33mm

3.5 14.81mm 11.30mm <20

4 15.34mm 11.86mm >12 5-6A4a
4.5 15.65mm 12.17mm 11 1/2
4.5  Harry James* 15.62mm 10.95mm 11 3/4    
5 15.85mm 12.60mm 10 1/2 7B-10B4 13C
5     Harry James* not published not published 10 1/2 7B-10B4  
5.5 15.52mm 12.60mm <103/4

5.5  Harry James* 16.00mm 11.99mm <7 <17C
6 16.46mm 13.36mm <2 11-13B
6.5 16.71mm 13.61mm <1 1/2
7 16.89mm 14.27mm 13C4-16C4
7.5 17.15mm 14.61mm >1 1/2

8 17.45mm 14.83mm < 1
20, M1,D1

"<" means: smaller than.  ">" means: larger than.

*The Harry James Parduba double cup trumpet mouthpieces have an even more shallow first, (closest to rim) cup.

The second cup (deepest cup) is smaller. This allows you to play even higher with the same rim size as your present mouthpiece.

 Remember, Harry James used a large bore trumpet probably in the .470" bore size.

 This allowed him to fill the horn and play higher.

Most sizes are available for CORNET and FLUGELHORN (Small Morse/Bach Taper only)
Smaller sizes are available on request.


To order call Lu @ (928) 635-9271 (Arizona).   I accept PayPal.

Click here to order on my secure order form

We ship all mouthpieces worldwide.

The original Parduba Double Cup Trombone Mouthpieces

 Trombone mouthpieces $97 plus $6.00 s/h (USPS first class package USA)

(World wide shipping via USPS "first class package International service" S/h $25.00 most countries)

3 Star *** 21.13mm 16.41mm      

2 23.95mm 22.12mm     <23
2.5 23.95mm 22.07mm >22

3 24.46mm 22.71mm <14.5(24.50) 43

3.5 24.66mm 22.89mm <11(24.70)mm
4 24.84mm 23.04mm >7  (24.75)mm 47  
4.5 25.10mm 23.09mm 6 3/4 (25.00) 50

5 25.15mm 22.94mm         
5.5 25.37mm 23.90mm 6 1/2 (25.40)    


New from Parduba: For the trumpet player who wants to double on trombone. Ask for the 3 Star*** trombone mouthpiece. Please specify the 3 Star*** not the 3. Cup diameter is a shade smaller than a nickel (21.33mm) with a thick rim and it still has the Double-Cup.    It is very easy to change from trumpet, Fluegle or Cornet to double on  Trombone.


To order call Lu @ (928) 635-9271 (Arizona).   I accept PayPal.

We ship all mouthpieces worldwide.

Click here to order on my secure order form

Parduba Double Cup TUBA Mouthpiece (model #73).

One size:
Cup diameter: 32.61mm, the depth is 32.31mm,  slightly smaller than a Bach 12

                     Tuba mouthpiece $138 plus $18 (USPS priority mail USA)                            .   

(World wide shipping via USPS "first class package International service" S/h 35.00 most countries)

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