Our Concept
PERFORMAXX and its sister company SEROSA Strings were formed on a simple premise, natural animal strings are far more compatible with the human body than synthetics are and together they form an unbeatable symbiotic relationship.
PERFORMAXX manufactures what are arguably the finest and most technologically advanced racket strings available today.
Bovine natural gut based, they are the product of many years of manufacturing experience, a deep understanding of players needs and their physiology, and a dedication to understanding the underlying science supported by carefully planned and executed research at major International Universities.
SEROSA manufactures some of the world's finest natural gut harp strings with 
the same values and dedication to excellence as PERFORMAXX. Musicians ask for what they need, and we build it.
Like our customers, we have to adapt and change in order to thrive. Our close contact with them allows us to identify small changes in their needs, often before they do. As a result, you will find that in addition to technologically enhanced traditional products, we have a range of innovative strings optimized for modern equipment and playing styles.
We specialize in natural gut because its natural collagen basis is very similar to our own muscles, tendons and ligaments. This synergy leads to better feel as well as enhanced feedback and comfort, not to mention power which is very compatible with our bodies and a great pure, rich sound. In summary, it plays great, sounds great, and is a pleasure to play with, whether it is in a harp or a tennis racket.