Monel pistons Monel pistons are resistant to corrosion and are an ideal choice for professional trumpet pistons which must retain precise fit and smooth action over many years. Hammered one-piece bell 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, yellow brass bell produces a pure and perfectly-balanced tone with quick response and extra presence due to advanced manufacturing techniques. Hand-lapped pistons and slides Hand-lapping pistons and slides ensures an absolutely perfect fit and seal between the pistons 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. Pressure-formed tubing Perfectly rounded tubing results in less turbulence and a smoother air flow, thus allowing for an excellent scale and reduced resistance. Laser-fused pluzuma welded bell A high-energy laser fuses the brass together for a virtually seamless bell which allows continuous even vibrations. One-piece, drawn, gold brass leadpipe This type of leadpipe offers excellent intonation, response and proper resistance. The step bore design is a medium bore trumpet fitted with a large bore tuning slide. This design allows for smoother air flow with less resistance. Conventional tuning slide The main tuning slide on the YTR-6335 has a single brace which creates moderate resistance in the horn with a slightly darker sound.