Marching-only Euphonium offers improved feel, resonance and quality of sound preferred by groups such as the 8 time DCI world champion Cadets. New configuration The new marching-only configuration offers optimal balance while improving projection and creating a deep tone. Large bell throat A large bell throat of the horn allows for a greater amount of airflow while producing a large, deep tone. 1st valve slide thumb hook The valve slide thumb hook allows for precise intonation of key notes. Hybrid metal valve guides The euphonium's durable valve guides with a metal insert offer long term performance and smooth piston action. ABS case Lightweight ABS case eases transport while providing superior protection.