String comparison
Power Fiber Pro vs NXT Control
Volkl Power Fiber Pro against Wilson NXT Control: ratings, specs and which one fits your junior.
The short answer
Both are multifilament strings. Power Fiber Pro leads on power and comfort. NXT Control leads on spin, control, durability and tension hold. For a junior with arm concerns, Power Fiber Pro is the safer choice. Power Fiber Pro 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 Power Fiber Pro if…
- You want more power (7 vs 6 out of 10)
- You want more comfort (8 vs 7 out of 10)
- Arm comfort comes first (arm friendliness 5/5 vs 4/5)
- Your player is younger (recommended from age 10 vs 12)
- You want to spend less (from $13 vs $18 a set)
- Best for: juniors with arm sensitivity who want control
- Best for: players moving up from a plush multifilament
- Best for: all-court players with full strokes
Pick NXT Control if…
- You want more spin (6 vs 5 out of 10)
- You want more control (8 vs 7 out of 10)
- You want more durability (6 vs 5 out of 10)
- You want more tension hold (7 vs 6 out of 10)
- Best for: players wanting multifilament comfort with poly control
- Best for: intermediate juniors with developing swings
- Best for: those transitioning from multi to poly
Specs side by side
| Spec | Power Fiber Pro | NXT Control |
|---|---|---|
| Type | Multifilament | Multifilament |
| Construction | Multilayer polyamide multifilament: thin-fiber core, polymer layer, two layers of thicker fibers and a polymer jacket; firmer polymer than Power Fiber II | Alternating bundles of firm polyester and soft nylon fibers |
| Gauges | 15L, 16, 17, 18 | 16 |
| Stiffness | Low | Medium |
| Set price | $13–15 | $18–20 |
| Reel price | — | $180–220 |
| Arm friendliness | 5/5 · Excellent | 4/5 · Good |
| Cost to maintain | 3/5 | 3/5 |
| Recommended from | Age 10 | Age 12 |
| Levels | Beginner, Intermediate, Advanced | Intermediate, Advanced |
| Play styles | All court, Touch player, Serve and volley | All court, Baseliner |
| Junior tension | 50-56 lbs for juniors. | 50-54 lbs for juniors. |
Power Fiber Pro in short
Volkl Power Fiber Pro is a firmer, more controlled and more durable version of Power Fiber II. Bigger filaments of a firmer polymer give it more control than a typical soft multifilament, while it still absorbs shock and vibration. Reviewers rate its power and feel above average and its spin below average, and durability reports are mixed. It comes in four gauges and several bright colors.
NXT Control in short
NXT Control brings the crisp precision of polyester to the comfortable NXT line. Constructed with alternating bundles of firm polyester filaments and soft nylon fibers, it gives playtesters excellent control on their biggest swings while maintaining multifilament comfort. A great middle ground for players who want more control than standard NXT but can't handle pure polyester.
Power Fiber Pro vs NXT Control: quick answers
Which has more spin, Power Fiber Pro or NXT Control?
Wilson NXT Control, with a spin rating of 6/10 against 5/10.
Which is more arm-friendly for a junior?
Volkl Power Fiber Pro scores 5/5 for arm friendliness, against 4/5 for NXT Control. It is recommended from age 10.
Which lasts longer?
Wilson NXT Control rates 6/10 for durability against 5/10.
Which is cheaper?
Power Fiber Pro costs about $13–15 a set and NXT Control about $18–20, at typical retail.
The short answer and the "pick if" lists are generated from our ratings and junior data only. Data verified 2026-10 (Power Fiber Pro) and 2025-01 (NXT Control).