Yamaha YTR2330 Standard Bb Student Trumpet   With upgraded mechanical elements, Yamaha has worked to improve on the world's most popular student trumpet with the intoduction of the TR-2330 trumpet. The TR-2330 combines state-of-the-art production expertise with design elements of Yamaha professional and custom horns. This standard trumpet now includes: highly durable and precisely honed monel pistons; newly designed two piece plasma welded bell; and perfectly rounded tubing for less resistance and refined tonal color.   FEATURES Honed pistons The precise fit between valve casings and pistons after honing means no air leakage. 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.   Pressure-formed tubing Perfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance. Now produced using them same method as high-end Yamaha models.   Laser-fused pluzuma welded bell A high-energy laser fuses the 2 piece yellow brass together for a virtually seamless bell which allows continuous even vibrations.   Nickel silver at stress points Nickel silver is a very strong material, and when used at stress points, makes the instrument far more durable.   Delrin one-piece valve guides Delrin one-piece valve guides are durable and quieter than metal valve guides.     Model 2330 Series S