The Kaplan Forza Viola A String is a Solid steel core A string designed to provide power with a clear open sound; medium & heavy tension are titanium wound; light tension is aluminum wound The Forza A is designed to allow greater projection in the higher register of the instrument while balancing and blending well with the lower strings and stands up well to bow pressure,
- K411 LM is titanium wound; K411 LL is aluminum wound
Note: Light tension gauging for Forza strings is limited to the A string