Tecnifibre X-One Biphase
X-One Biphase is a multifilament string constructed using a new variation of the tried-and-true Tecnifibre process. According to Tecnifibre, X-One Biphase combines H2C (High Heat Capacity) microfilaments for power and feel, with NRG microfilaments for dynamic response. These microfilaments go through a chemical “trimerization” process to increase cohesion when dipped into polyurethane for bonding, and external protection against wear and notching. As with other Tecnifibre strings, the polyurethane also absorbs vibration and reduces shock. Tecnifibre tells us that its patented Biphase process extends string life by 20 percent and increases spin performance.