Rondo cello A string | Metzler ViolinsProfessional players choose Rondo strings for their exceptionally deep and focused tonal intensity. A fast bow response supports their direct character at any dynamic level, while the strong focus offers a great projection of this rich and complex sound. The RONDO set is appreciated by professional musicians due to its intense tonal depth and accurate bow response at a vast range of dynamic levels. The particular essence of the set RO400 is its