The FFM in the model number stands for Frankfurt am Main. The YTR-938FFM was developed at the Yamaha Frankfurt Atelier with input from Markus Bebek, Associate Principal Trumpet of the Opera Frankfurt am Main.

The taper of the leadpipe on the rotary valve trumpet has the optimum taper for superb intonation and dark powerful tone.

A one-piece bell has an axial (lengthwise) seam, making it a continuous extension of the instrument’s material. This results in pure, uniform resonance and superior tone. A hammered, gold brass bell produces a slightly more broad and rich, yet perfectly-balanced tone with quick response and extra presence due to advanced manufacturing.

Hand-lapping rotary valves and slides ensures an absolutely perfect fit and seal between the valve and casing or slide parts. Such a perfect fit helps to achieve smooth air flow and smooth action and improve the response and intonation of the instrument.

Perfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance.

Softer and rounder than piston valve trumpets.