The 642 offers outstanding intonation and tone expected from a compensating euphonium. Features large shank receiver and 4 valves (3 top + 1 side). Solid construction and space age materials combine to make the YEP-642 Series a wonderfully playing instrument. The 642 Series has a larger bell flare and large shank mouthpiece receiver to produce a gorgeous, colorful sound that stands apart from most other instruments. You will really enjoy the experience of playing this instrument.