Head to head

Signum Pro Firestorm 16 (1.30) vs Topspin Cyber Blue 16

They split the measurements 3–3. The widest gap is string friction, where Cyber Blue 16 is 21 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Signum Pro

Firestorm 16 (1.30)

Polyester · 16 ga

Topspin

Cyber Blue 16

Polyester · 16 ga

Stiffness lower = softer, kinder on the arm
18653rd pct
19057th pct
Tension loss lower = stays where you strung it
4372nd pct
4373rd pct
Energy return higher = livelier, more free power
8413th pct
8414th pct
Spin potential higher = more spin off the string bed
5.569th pct
5.876th pct
Ball bite higher = grabs the ball harder
0.48571st pct
0.45659th pct
String friction lower = strings slide and snap back
0.08842nd pct
0.07921st pct

Bars are percentile against all 791 strings, and the marked side is the one that measures better, which is not always the one you want. A firmer bed is worse for your elbow and better for your control, and no measurement knows which of those you came for.

Which one wins, by problem

Each string's standing on the site's rankings, out of every measured string in the database. This is where a comparison stops being arithmetic and starts being a decision.

Swapping between them: what tension?

Bed stiffness is published at one reference tension, so the only honest conversion is to scale it. These are starting points from 52 lb, not prescriptions. The calculator takes your own tension.

Coming from Firestorm 16 (1.30) at 52 lb

String Cyber Blue 16 at 50.9 lb 23.1 kg

Coming from Cyber Blue 16 at 52 lb

String Firestorm 16 (1.30) at 53.1 lb 24.1 kg

Hybrid: what if you used both?

Estimated, not measured. No hybrid combination has been tested as a bed. These figures are the two strings' own lab measurements weighted by how much of the bed each one actually is. Treat them as a guide to which way a pairing moves, never as lab data.

Firestorm 16 (1.30) mains / Cyber Blue 16 crosses

Stiffness55th pct · 1 measured
Tension loss73rd pct · 1 measured
Energy return13th pct · 1 measured
Spin potential70th pct · 1 measured
Ball bite70th pct · 1 measured
String friction35th pct · 1 measured

Cyber Blue 16 mains / Firestorm 16 (1.30) crosses

Stiffness55th pct · 1 measured
Tension loss73rd pct · 1 measured
Energy return13th pct · 1 measured
Spin potential74th pct · 1 measured
Ball bite61st pct · 1 measured
String friction28th pct · 1 measured

Open this in the hybrid builder

Which goes dead first?

Estimated from tension loss, which is the only thing the database measures about ageing. This is when the bed stops playing the way you strung it, not when the string breaks.

Firestorm 16 (1.30)

~18 hours of play

Cyber Blue 16

~18 hours of play

Both strings in full

Every published measurement
StringGaugePriceStiff lb/inLoss %Power %SpinBite COFFriction COF
Signum Pro Firestorm 16 (1.30) Polyester16find18643845.50.4850.088
Topspin Cyber Blue 16 Polyester16find19043845.80.4560.079

Add a third string Firestorm 16 (1.30) in full Cyber Blue 16 in full