Warchal is generally known as being a supporter of synthetic core strings, however there is a bit of an issue with making violin string sets. The E string cannot be synthetic, and so a plain or wound metal wire E is commonly used. There is always a bit of a problem with the compatibility of the metal soprano range E string with the alto range (G, D and A strings). String makers obviously aim to achieve a seamless change between the soprano and alto ranges, however a slight difference is always heard.
Influenced by the Soviet and Russian school and playing style many of Russian violinist preferred to have the soprano-alto 'break' between the A and the D strings instead of between the E and the A strings. Therefore, Warchal developed a metal core A string which had a trouble-free response, but which had the tonal character of a synthetic or gut string. Warchal aimed to create a metal A which would sound warm even under maximum bow pressure. Developing of the metal A string took longer than expected, but now a string is successfully created, which gives an unmatched response with a warm tone. The Russian Style violin A string gives you a seamless and mellow switch between the alto and soprano registers, excellent response and incredible durability. Wartchal believes that you will enjoy it!