Signum Pro Firestorm 12m String

Signum Pro Firestorm 12m String
€7.85 Public price: €9.50 Price comparisons are based on the recommended retail price ('RRP') or the original selling price. However, the item(s) may not have been offered at that price. We do our utmost to compare prices accurately and to offer you items at the best price. -17%
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-12% from 200€ purchase Code : NOVEMBER12
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X-Compare

X-Compare: laboratory measurements, our own rating scale.

X-Compare ratings start from physical measurements: dwell time, energy return, tension loss, string-on-string friction and more. Our own scale turns them into 6 criteria, each rated out of 100. Every string goes through the same grid, which makes for fair comparisons.

Firestorm 12m
Signum pro
Firestorm 12m

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Signum Pro Tornado 200m
Signum Pro Tornado 200m

Description

Signum Pro Firestorm string

Signum Pro Firestorm is Mikail Youzhny's string.

It features a new molecular structure optimized for high power, excellent playability and comfort with minimal loss of tension. Its high resistance and excellent ball control make it a top-of-the-range string.

This reference is destined to be an excellent string provided you have a good stroke. Slightly more focused on control than ball speed, you'll easily find precision.

Our Signum Pro Firestorm string test

Power and control

This string is more about control than power. You'll be extremely precise with every stroke. To access power more easily, lower your usual tension by 10% ( Signum Pro recommendation).

Spin

spin remains classic for a semi-rigid monofilament string like this.

Comfort and tolerance

Assuming that Firestorm is a semi-rigid monofilament, we can say that it offers good playing comfort. Tolerance is average, and vibrations can be felt on off-center balls. You'll also need good striking ability to regain length on off-center balls. To improve tolerance, you can slightly lower your usual tension.

Durability and tension hold

Thanks to its molecular structure, Firestorm string has a good tension hold. As for service life, it's decent and similar to a standard monofilament.

Sensation / feel / stiffness

On heavy hits, the string's qualities are amply expressed, with an excellent feel. Don't hesitate to test the 1.20 gauge to better exploit the string's intrinsic qualities.

Tip Extreme Tennis:

Don't hesitate to lower your usual tension for greater forgiveness and power. You can also opt for the 1.20 gauge for a better feel and sensation.

WHAT TYPE OF PLAYER IS THE SIGNUM PRO FIRESTORM DESIGNED FOR?

We recommend this reference to players looking for control in their game to counterbalance innate power or a lack of control linked to a technique in need of perfecting.

Players with strong hitting qualities and natural power. The control offered by this string will enable you to balance the whole. Firestorm will also appeal to forward-thinking players who like to finish points on the fly and need a lot of touch and control.

Where does the Firestorm string fit in the Signum Pro range?

This string is one of the most controllable. It also offers plenty of power, provided you have good hitting qualities. If that's the case, then Firestorm comes into its own and performs at its best. Finally, its tension hold and resistance are also among the best in the range.

Highlights :

  • Control
  • Power
  • Comfort

Weaknesses :

  • Spin lagging behind
Data sheet
Strength
Control
Type
Monofilament
Lenght
12m set
Colour
Gray
Compositions
Polyester
String stiffness
Medium for a monofilament
Recommended stringing tension
20 - 23 kg i Indicative value for a 645 cm² head size. For a smaller head, subtract 1 kg per 15 cm² less. For a larger head, add 1 kg per 15 cm² more.

Reviews

Customer reviews
Société des Avis Garantis Show attestation
0
1★
0
2★
0
3★
2
4★
5
5★
9.4/10


Based on 7 reviews

  • Loïc G.
    Published Sep 20, 2025 at 05:55 pm (Order date: Sep 10, 2025)
    5

    Surprisingly comfortable and lively stringing and contrary to what I've read, it generates spin quite easily, however after 2 hours it loses some of its control qualities and the strings move... I lift a lot (Translated review)

  • Thomas B.
    Published May 12, 2024 at 11:44 am (Order date: May 01, 2024)
    5

    Excellent stringing (Translated review)

  • Gilles M.
    Published Sep 29, 2023 at 03:45 pm (Order date: Sep 15, 2023)
    5

    OK (Translated review)

  • Aude L.
    Published Dec 14, 2018 at 10:36 pm (Order date: Dec 04, 2018)
    5

    Fast and compliant delivery (Translated review)

  • Damien G.
    Published Nov 16, 2016 at 01:22 pm (Order date: Nov 06, 2016)
    5

    For those who want a string that offers a crazy feeling and good power when you commit. So don't hesitate and test it because at this price, it's a steal! (Translated review)

  • Client
    Published Sep 14, 2012 at 02:28 pm (Order date: Sep 04, 2012)
    4

    Really a nice surprise this Tornade Firestorm in gauge 1.25 tensioned 23/22 on a Head Extreme Pro It offers good control with a real power reserve for those who can always hit the ball. The spin potential is not its strong point but remains reasonable, technique must do the rest... It also offers a certain touch A super feeling at impact, it's a real delight :) (Translated review)

  • Charles
    Published Apr 13, 2012 at 09:33 pm (Order date: Apr 03, 2012)
    4

    I tested at a slightly lower tension as recommended in your description (22kg) and I was right otherwise OUCH for my arm at my usual tension (24). The string is firm and gives me good sensations. Good control and good power. You need to hit a minimum to be rewarded with this string. (Translated review)

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