Yamaha YTR-8340EM: Eric Miyashiro’s Trumpet

Do you know what brand of trumpet is used by one of the greatest high note players of today is? We are looking into this. You may be surprised by a ‘little secret’ that hides in this jewel…
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Recently, we had the opportunity to speak with the great Eric Miyashiro, and have a video interview that will soon be released.

Miyashiro, in addition to his projection and spectacular sound throughout the register, especially impresses with his extreme register. And one of the ingredients for a good high register is, of course, the tool you use, that is, the type of trumpet. So, we asked Eric about his trumpet and he told us many interesting things about it. Soon, we will have the interview released, but for now, we can explain the characteristics of the wonderful Yamaha YTR-8340EM model.

It is a lightweight B flat trumpet, with a 134.4 mm (5 ¼’’) brass bell, a large bell, for sure. It is sold with a gold lacquered finish, but also silver (YTR-8340EMS model).

Obviously, it is a trumpet that Yamaha designed in collaboration with Eric Miyashiro himself, and it especially has three features that drawn our attention (two of which are related to the bell):

Multiple bore

The caliber, or dimensions, of the 8340EM is a Medium. However, the caliber of the valve casing is Large. In other words: this trumpet does not have the same dimension throughout. What this does, as you play and press the valves, it gives you a feeling of reduced resistance, which is usually created when the air pressure is channeled into the valve wall and then into other tubing. We assume this help your air preservation and endurance as well.

Side seam of the bell

As you know, the bells are manufactured from one or two pieces of metal. When it comes to a single seem — as is the case of the 8340EM — the metal is curved and the two sides then obviously welded together, forming the shape of the bell. This seam, called an axial seam, runs along the entire length of the bell to the edge, and is usually to the bottom of the bell itself. Well, in the case of 8340EM, the seam is oriented to one side, specifically to the side where the piston housing is located. Yamaha technicians say that the horn then has more freedom to vibrate, and a greater vibration of the materials translates into a richer sound.

French bell edge

Usually, the edge of a bell is rounded. The French edge, on the other hand, is an advanced technique that makes it semi-cylindrical. Builders ensure that this makes it easier for the player to receive more positive feedback of the sound they are producing.

We recommend you try this trumpet for yourself, and you look closely at the things we have commented on.


If, in addition to the trumpet, you are interested in Eric Miyashiro’s mouthpieces, Yamaha also designed the TR-EM1 and TR-EM2 mouthpieces, from the Signature series.

Both mouthpieces have similar characteristics: the ring is designed to relieve muscular fatigue when playing (something very practical for high note specialists), with a thin and rounded contour and a 16.02 mm diameter; the cup is very shallow, at 3.65 mm, and a very narrow backbore. The differences between them are subtle, but enough for the EM1 to be more practical when playing solo and the EM2 for jazz.

Get in touch with our trusted store and ask for more information!

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