String comparison
Live Wire XP vs X-One Biphase
Gamma Live Wire XP against Tecnifibre X-One Biphase: ratings, specs and which one fits your junior.
The short answer
Both are multifilament strings. Live Wire XP leads on spin. X-One Biphase leads on power, comfort and tension hold. They score the same for arm friendliness (5/5). Live Wire XP costs less per set.
Ratings
Power
Spin
Control
Comfort
Durability
Tension hold
Ratings are on a 1–10 scale. The higher score is in bold when they differ.
Pick Live Wire XP if…
- You want more spin (6 vs 5 out of 10)
- You want to spend less (from $15 vs $18 a set)
- Best for: players with arm problems
- Best for: comfort-seekers at any level
- Best for: all-court players wanting feel
Pick X-One Biphase if…
- You want more power (9 vs 8 out of 10)
- You want more comfort (10 vs 9 out of 10)
- You want more tension hold (7 vs 6 out of 10)
- Best for: players wanting natural gut feel without gut price
- Best for: those with arm issues or tennis elbow
- Best for: flat hitters with slow to medium swing speeds
Specs side by side
| Spec | Live Wire XP | X-One Biphase |
|---|---|---|
| Type | Multifilament | Multifilament |
| Construction | Multi-fiber construction with soft outer wrap | High Heat Capacity (H2C) fibers with Biphasic trimerization process and polyurethane immersion |
| Gauges | 16, 17 | 16, 17, 18 |
| Stiffness | Low | Low |
| Set price | $15–18 | $18–22 |
| Reel price | $100–120 | $200–250 |
| Arm friendliness | 5/5 · Excellent | 5/5 · Excellent |
| Cost to maintain | 3/5 | 3/5 |
| Recommended from | Age 8 | Age 8 |
| Levels | Beginner, Intermediate, Advanced | Beginner, Intermediate, Advanced |
| Play styles | All court, Serve and volley, Touch player | All court, Serve and volley, Touch player |
| Junior tension | 52-58 lbs for juniors. Very arm-friendly at any tension. | 52-56 lbs for juniors. Holds tension well for a multifilament. |
Live Wire XP in short
Gamma Live Wire XP continues Gamma's legacy of multifilament excellence. In 2004, Gamma Live Wire Professional became the first synthetic string to rank ahead of natural gut in Overall Performance from Tennis Warehouse. Live Wire XP delivers premium comfort with good power and playability. Built on over 50 years of string innovation from the company that pioneered synthetic string technology, it offers exceptional arm protection without sacrificing performance.
X-One Biphase in short
X-One Biphase is Tecnifibre's premium multifilament that combines their best technologies into a single string. The patented Biphasic process with visible marks extends string life by 20% while the H2C fibers allow extreme temperature treatment during manufacturing. Multifilament fibers are immersed in polyurethane for shock absorption and optimum comfort. Many users say "I've never tried natural gut, but X-One Biphase is what I imagine it would feel like." Easily one of the more powerful multifilaments available with cloud-like comfort even at higher tensions.
Live Wire XP vs X-One Biphase: quick answers
Which has more spin, Live Wire XP or X-One Biphase?
Gamma Live Wire XP, with a spin rating of 6/10 against 5/10.
Which is more arm-friendly for a junior?
They score the same, 5/5. Live Wire XP is recommended from age 8 and X-One Biphase from age 8.
Which lasts longer?
They tie on durability (5/10). Tension maintenance: Live Wire XP 6/10, X-One Biphase 7/10.
Which is cheaper?
Live Wire XP costs about $15–18 a set and X-One Biphase about $18–22, at typical retail.
The short answer and the "pick if" lists are generated from our ratings and junior data only. Data verified 2025-01 (Live Wire XP) and 2025-01 (X-One Biphase).