Warchal Amber Viola Set 710MSB (A Metal – Ball End)When we created our new Amber strings we used all of our experience and knowledge to make the highest quality string set. Our aim was to achieve at least the same quality of sound that gut strings provide, but without the typical tuning instability. To be able to do this we have developed a completely new core material called W Core. Synthetic as well as metal core A strings are available. The metal core A string benefits from our helix design which