Pirastro Wondertone Solo Violin StringsThe core material used for Evah Pirazzi Gold, Evah Pirazzi, Obligato and Violino strings has been modified for the Wondertone Solo, resulting in the following features: The tone is direct, brilliant and clear No background hiss Outstanding response Outstanding tuning stability Insensitive to variations in temperature and humidity Material Sock Colour Sound Modern synthetic core strings Orange or green with orange stripes Direct, brilliant and clear