Jupiter JEP1120 4 Valve Euphonium - Key Of BbThe JEP1120 features a traditional 3+1 valve configuration with compensating system. The hand crafted 12. 2" yellow brass bell produces a warm, resonant tone with great clarity and focus. JEP1120 is suitable for all performance applications. Features Lacquered Brass Body is produced using state of the art technology to ensure an instrument of the most accurate scale and playability Stress free assembly facilitataes improved performance and increased