E65S GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• S cup: The versatile GR S cup can be used in varied musical situations. The sound is big and brilliant. Projection is excellent. The backbore is the GR #1, with good core to the sound. The S Cup volume is small, though it has ample lip room for most players. This is an ideal solution to those who bottom out on conventional commercial cups. The alpha angle is not too high and does not impinge the lips; furthermore, it has the ability to lightly grip and keeps the lips held into place for great endurance. This cup is great for lead, show work, studio work, and all-around playing.

E65MS GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• MS cup: has a slightly lower alpha angle, greater cup volume, a slight increase in cup depth, and a larger backbore---the GR #2---than the S cup. This is a great all-around cup with a huge, brilliant sound. The added volume and a slightly lower alpha angle give the player more lip room: an ideal solution for players who find that the GR S cup is a bit tight for them. The sound is big and full with an excellent core. It has less edge than the S cup and works well in all playing situations.

E65M GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• M cup: has the same backbore as the MS Cup: the GR #2. The M Cup has a slightly lower alpha angle, more volume and depth and greater lip room than the MS Cup, though the playing characteristics are similar. Works very well in a variety of playing situations from commercial to concert work. An ideal all around mouthpiece with a compact core, vibrant feel, and full of overtones. This is the most popular GR cup.

E65MX GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• MX cup: more volume and more cup depth, lower alpha angle than the M Cup, and the large GR #3 backbore. MX is one of the more popular cups of choice for C trumpet, and is excellent on Bb as well. It is particularly well suited to students, part-time C trumpet players, and top studio musicians that want an efficient C trumpet mouthpiece. The MX cup offers more resistance than the VC or CX cups. It is popular for larger, less resistant horns and for light chamber work. The MX cup projects well; the tone is brilliant and very even throughout all registers; the upper register speaks very easily with precise intonation. Light articulation is very easy with the MX cup. If you are looking for a cup that is fat, precise, and brilliant, the MX cup is an ideal choice.

E65C* GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• C* cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C* cups feature the GR Classic blank, Standard rim, and GR #3 backbore. The C* was designed for all-around Bb use, featuring a higher alpha angle (similar to M cup) and a larger cup volume. This design allows for added lip support and efficient playing characteristics throughout the range of the trumpet. The C* has an improved throat entrance over older, "conventional" C cup designs, which allows improved articulation, accuracy, and efficiency, along with a pure core of sound not found on most traditional mouthpieces. The C* cup has a beautiful, full sound with excellent projection, and the ability to blend in any situation. The C* will be a great choice for the student, amateur, and professional. This cup has been use successfully on the D/Eb trumpet as well as the C trumpet.

If you play very open, free-blowing instruments and require more resistance, an excellent option is the C* cup with the GR #2 Backbore. Please contact Thompson Music to place a special order, or indicate your choice in the comments section of the Shopping Cart page.

E65C** GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• C** cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C** cups feature the GR Classic blank, Standard rim, and GR #3 backbore. The C** was designed to have a similar blow and feel to older, traditional C cup designs, while improving intonation, slotting, articulation and efficiency. It is an excellent choice for both the Bb and C trumpet, featuring a higher alpha angle (similar to M cup) and a larger cup volume. The design allows for added lip support and efficient playing characteristics throughout the range. The C** has a more open throat entrance than the C*, requiring more strength. It's a powerful cup that produces a great volume of sound, good articulation, and excellent projection. A good choice for the orchestra, concert band, solo work, or quintet.

E65C GR Trumpet Mouthpiece
• E rim contour: made for players who require a wider feel and less bite. This rim is ideal for players that require good endurance; furthermore it is great for downsizing, giving the player the same outside diameter, yet smaller inside diameter. The bite is medium soft and contour is semi-flat.
• .65" rim diameter, approximately equivalent to a Bach 5
• C cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C cups feature the GR Symphonic blank, Standard rims, and GR #3 backbore. The C has a more open throat entrance than the C* and C**; it requires a strong player. The C design features a high alpha angle (similar to M cup), a large cup volume, very open throat entrance, and huge orchestral sound. The design allows for added lip support and efficient playing characteristics. The C is a very powerful cup that has a great volume of sound, good articulation, and excellent projection. It is the preferred choice for the orchestra, as well as for very powerful players requiring a more efficient alpha angle.

65ES-T GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• ES-T cup: with an even smaller cup volume than the ES cup, this is a very efficient model for high-range playing.

65ES GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• The ES cup has a higher alpha angle than our standard S cup. It has a smaller first cup radius and an increased beta angle to enhance articulation and sizzle in the extreme upper register. This cup has a very small volume to maximize compression. The ES cup has a huge sound in the upper register. The throat and backbore are not compromised because the compression is achieved from the cup design. #1 backbore.

65Z* GR Trumpet Mouthpiece
• Z* rim contour: medium bite---slightly more than the Standard rim
• .65" rim diameter, approximately equivalent to a Bach 5
• Z cup: has a small cup volume with a fat, brilliant, powerful sound throughout the range, and an astonishingly easy upper register. The Z* rim has a medium bite and the Z** rim has a softer bite; otherwise the Z cup parameters are basically the same. While most conventional commercial cups tend to shut off vibrations and have a thin tone, the Z cups have the chop room to allow for free lip vibrations which produce clean articulations, and a full commanding sound from low F# to above double C! The Z cups features a higher alpha angle than the S Cup and longer L1 to achieve optimum lip room for vibrating freedom, support for compression and crisp articulation. The Z* rim has a medium bite and the Z** rim has a softer bite; otherwise the Z cup parameters are basically the same. This is an excellent choice for commercial playing, big band, lead-work, marching band, drum corps, and recording. This mouthpiece will really Zing from top to bottom.

65Z** GR Trumpet Mouthpiece
• Z** rim contour: slightly rounder with less bite than the Standard rim
• .65" rim diameter, approximately equivalent to a Bach 5
• Z cup: has a small cup volume with a fat, brilliant, powerful sound throughout the range, and an astonishingly easy upper register. The Z* rim has a medium bite and the Z** rim has a softer bite; otherwise the Z cup parameters are basically the same. While most conventional commercial cups tend to shut off vibrations and have a thin tone, the Z cups have the chop room to allow for free lip vibrations which produce clean articulations, and a full commanding sound from low F# to above double C! The Z cups features a higher alpha angle than the S Cup and longer L1 to achieve optimum lip room for vibrating freedom, support for compression and crisp articulation. The Z* rim has a medium bite and the Z** rim has a softer bite; otherwise the Z cup parameters are basically the same. This is an excellent choice for commercial playing, big band, lead-work, marching band, drum corps, and recording. This mouthpiece will really Zing from top to bottom.

65SZ GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• SZ cup: recommended for players who feel the Z cup provides too little lip room, has an alpha angle that is too high, or a rim that is too flat. A great choice if the S cup doesn’t provide enough compression for range requirements and articulation, or enough edge to the sound. The SZ cup has the rim and alpha of the S cup and the bottom of the Z, with the GR #1 backbore. The GR Mouthpiece Design Program makes a mathematically perfect design that features less volume than the S cup but more than the Z cup. This design allows for the lip room of the S cup with the edge and compression of the Z cup. The SZ has a powerful big sound and a full sound spectrum, good endurance and added compression for a strong upper register with superb articulation. The SZ cup is outstanding for lead work, marching band/drum corps, Latin, jazz, and studio work, great for microphone work and records well.

65S GR Trumpet Mouthpieces
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• S cup: The versatile GR S cup can be used in varied musical situations. The sound is big and brilliant. Projection is excellent. The backbore is the GR #1, with good core to the sound. The S Cup volume is small, though it has ample lip room for most players. This is an ideal solution to those who bottom out on conventional commercial cups. The alpha angle is not too high and does not impinge the lips; furthermore, it has the ability to lightly grip and keeps the lips held into place for great endurance. This cup is great for lead, show work, studio work, and all-around playing.

65MS GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• MS cup: has a slightly lower alpha angle, greater cup volume, a slight increase in cup depth, and a larger backbore---the GR #2---than the S cup. This is a great all-around cup with a huge, brilliant sound. The added volume and a slightly lower alpha angle give the player more lip room: an ideal solution for players who find that the GR S cup is a bit tight for them. The sound is big and full with an excellent core. It has less edge than the S cup and works well in all playing situations.

65M GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• M cup: has the same backbore as the MS Cup: the GR #2. The M Cup has a slightly lower alpha angle, more volume and depth and greater lip room than the MS Cup, though the playing characteristics are similar. Works very well in a variety of playing situations from commercial to concert work. An ideal all around mouthpiece with a compact core, vibrant feel, and full of overtones. This is the most popular GR cup.

65MX GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• MX cup: more volume and more cup depth, lower alpha angle than the M Cup, and the large GR #3 backbore. MX is one of the more popular cups of choice for C trumpet, and is excellent on Bb as well. It is particularly well suited to students, part-time C trumpet players, and top studio musicians that want an efficient C trumpet mouthpiece. The MX cup offers more resistance than the VC or CX cups. It is popular for larger, less resistant horns and for light chamber work. The MX cup projects well; the tone is brilliant and very even throughout all registers; the upper register speaks very easily with precise intonation. Light articulation is very easy with the MX cup. If you are looking for a cup that is fat, precise, and brilliant, the MX cup is an ideal choice.

65L GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• L cup: a lower alpha angle, increased depth, slightly more volume than the MX Cup, and the large GR #3 backbore---low resistance with a clear, centered, huge fat sound, the #3 is ideal for everything from jazz to symphonic work. While the L cup is excellent for C trumpet, many players prefer the vibrant feel of it on the Bb trumpet. The sound is more present around the instrument with the L cup, where the MX cup projects with a sound that is more directional. The L cup plays very evenly throughout the registers and the sound is rich with resonant overtones. Preferred for Concert Band, Wind Ensemble, Brass Quintet, Chamber Work, Orchestral Work, Solo Work, and Jazz.

65LX GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• LX cup: a very large cup volume, increased depth, an alpha angle much lower than the L Cup, and a #3 backbore. This allows for a lot of lip engagement into the mouthpiece. A strong embouchure is required to control this cup and maintain endurance, but the pay off is a huge sound, a full spectrum of overtones, and an evenness and brilliance throughout the horn unmatched with "conventional" mouthpieces of a similar volume. Projection is excellent. Works well on the C and Bb trumpet. An outstanding orchestral and solo cup, used by top orchestral players the world over.

65C* GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• C* cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C* Cups feature the GR Classic blank, Standard rim, and GR #3 backbore. The C* was designed for all-around Bb use, featuring a higher alpha angle (similar to M cup) and a larger cup volume. This design allows for added lip support and efficient playing characteristics throughout the range of the trumpet. The C* has an improved throat entrance over older, "conventional" C cup designs, which allows improved articulation, accuracy, and efficiency, along with a pure core of sound not found on most traditional mouthpieces. The C* cup has a beautiful, full sound with excellent projection, and the ability to blend in any situation. The C* will be a great choice for the student, amateur, and professional. This cup has been use successfully on the D/Eb trumpet as well as the C trumpet.

If you play very open, free-blowing instruments and require more resistance, an excellent option is the C* cup with the GR #2 Backbore. Please contact Thompson Music to place a special order, or indicate your choice in the comments section of the Shopping Cart page.

65C** GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• C** cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C** cups feature the GR Classic blank, Standard rim, and GR #3 backbore. The C** was designed to have a similar blow and feel to older, traditional C cup designs, while improving intonation, slotting, articulation and efficiency. It is an excellent choice for both the Bb and C trumpet, featuring a higher alpha angle (similar to M cup) and a larger cup volume. The design allows for added lip support and efficient playing characteristics throughout the range. The C** has a more open throat entrance than the C*, requiring more strength. It's a powerful cup that produces a great volume of sound, good articulation, and excellent projection. A good choice for the orchestra, concert band, solo work, or quintet.

65C GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5 rim diameter
• C cup: all three C series cups (C*, C**, and C) have the same rim, alpha angle, L1, and 1st cup radius (R1), to accommodate switching between Bb, C, and D/Eb, and other playing requirements. The C Cups feature the GR Symphonic blank, Standard rims, and GR #3 backbore. The C has a more open throat entrance than the C* and C**; it requires a strong player. The C design features a high alpha angle (similar to M cup), a large cup volume, very open throat entrance, and huge orchestral sound. The design allows for added lip support and efficient playing characteristics. The C is a very powerful cup that has a great volume of sound, good articulation, and excellent projection. It is the preferred choice for the orchestra, as well as for very powerful players requiring a more efficient alpha angle.

65VC GR Trumpet Mouthpiece
• Standard GR rim contour: a balance of medium characteristics, this rim is comfortable and should be easy for most players to adapt to quickly. The width may feel a bit more generous than traditional rims and will aid endurance. Flexibility is good and articulations will be cleanly defined.
• .65" rim diameter, approximately equivalent to a Bach 5
• VC cup: a special cup designed specifically for use on the C trumpet. It has the same alpha angle as the L cup. The upper and lower cup have a slightly larger radius, and a lower beta angle. This formula makes more of a V-shaped cup, but articulation and brilliance of tone are outstanding. The VC Cup was designed to project in the orchestra. The shape of the throat entrance is excellent for C trumpet. The sound is big and projects in a rich, brilliant manner; furthermore it is very easy to shade and color. The upper register is efficient and strong while the lower is warm and rich. The throat entrance, throat, bore, and backbore are a little more open than the standard MX, L, and LX. This cup can be played on Bb with good results, though it requires a very strong player. Many players use the 66L or 67L on Bb trumpet and the 66VC or 67VC on C trumpet. The VC cup is an excellent choice for symphonic applications and use in other large ensembles. It offers the serious C trumpet player a huge symphonic sound that really projects.