String & Racket Finder
Signum Pro tennis strings compared
Every Signum Pro string bed on the bench — 9 setups rated across eight axes, including arm friendliness, which is the axis most string charts leave out.
How the range scores
Across these 9 beds the range averages 8.1 for spin and 5.6 for arm friendliness. Its strongest axes are spin (8.1) and precision (7.6); its weakest is arm friendliness (5.6). That makes it middling on arm friendliness — neither a comfort range nor a punishing one. Gauges represented: 1.19 · 1.23 · 1.24 · 1.25 · 1.28 mm.
Compare these strings in the finder →Ratings
Each row is a string bed rather than a reel: a full bed of one string, or a named hybrid. Axes are spin, power, control (flat), precision, feel, sound, longevity, arm friendliness, each rated 0–10.
| String | Setup | Spin | Pwr | Ctrl | Prec | Feel | Snd | Life | Arm |
|---|---|---|---|---|---|---|---|---|---|
| SIGNUM PRO Poly Plasma 1.23 | full bed | 8 | 6 | 8 | 8 | 5 | 6 | 7 | 5 |
| SIGNUM PRO Poly Plasma Pure 1.28 | full bed | 8 | 6 | 8 | 8 | 5 | 6 | 7 | 5 |
| SIGNUM PRO Hyperion 1.24 | full bed | 8 | 7 | 7 | 8 | 6 | 6 | 7 | 7 |
| SIGNUM PRO Tornado 1.23 | full bed | 9 | 6 | 8 | 8 | 5 | 7 | 6 | 5 |
| SIGNUM PRO Firestorm 1.25 | full bed | 9 | 6 | 8 | 8 | 5 | 7 | 6 | 4 |
| SIGNUM PRO Plasma HEXtreme 1.25 | full bed | 9 | 6 | 8 | 8 | 5 | 7 | 6 | 4 |
| SIGNUM PRO Poly Megaforce 1.19 | full bed | 9 | 6 | 9 | 8 | 5 | 6 | 5 | 4 |
| SIGNUM PRO X-Perience 1.24 | full bed | 8 | 8 | 7 | 7 | 7 | 6 | 7 | 7 |
| SIGNUM PRO Tornado Plus 1.24 | full bed | 5 | 9 | 4 | 5 | 9 | 6 | 5 | 9 |
Swipe the table sideways for the remaining columns.
Matching a string to your racket
A string only makes sense in a frame. A stiff polyester in an already stiff, powerful racket is the most common cause of arm trouble in club tennis, and the same string in a flexible control frame can be excellent. The finder scores the pairing rather than the string alone.