Developed with some of the world's finest Euphonium soloists, the the YEP-842S euphonium is the ultimate solo instrument for the euphonium virtuoso. Thin bell Improved response compared to the YEP-642. Bow guards The improved longer bow gaurds feature an enclosed wire for aided protection. New design for holding tube Promotes easier hand position for holding the instrument. First valve tuning slide A shorter 1st valve tuning slide makes for better overall intonation. Monel pistons Monel pistons are resistant to corrosion and are an ideal choice for professional baritone pistons which must retain precise fit and smooth action over many years. Hand-lapped valves and slides Hand-lapping valves and slides ensures an absolutely perfect fit and seal between the valve 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. Compensating system The compensating system found on the YEP-842S ensures accurate tuning on all notes throughout the instrument's range, particularly in the difficult low range. Bell taper and leadpipe design The combination of the bell taper and the 'open' leadpipe is designed for greater projection, control and response. Intonation True and centered intonation makes this great euphonium even better! Level: Custom Euphonium Key: Bb / F System: Compensating Bore 0.591 0.661" dual bore Bell Diameter: 11 4/5" Leadpipe Material: Gold brass Body/Bell