YTR-2330 Standard Bb Trumpet Bb Trumpet. The Yamaha YTR-2330 is the latest version of Yamaha’s main student trumpet, an instrument that has assisted in the development of thousands of trumpeters all over the world. Two-piece bell of the YTR-2330 is crafted using state-of-the-art production methods, delivering a consistent, vibrant tone. The balanced weight and addition of an adjustable third valve trigger allows for a natural hand position and promotes proper playing technique, while the water key on the third valve slide adds to the ease of use and over-all playability of the instrument. The newly redesigned, durable yet light two-piece bell is made of yellow brass for optimal playability and to promote good technique and endurance. Highly durable monel alloy pistons as well as newly designed piston buttons and bottom caps help lengthen the life of the instrument while also maximizing sound quality. The 2nd and main tuning slides are produced using the same method as high-end Yamaha models, which provides stability, a more refined tonal color and added durability.