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Head to head

Signum Pro Plasma HEXtreme 16 (1.30) vs Tecnifibre Black Code 4S 16 (1.30)

Black Code 4S 16 (1.30) leads on 4 of 6 measurements. The widest gap is snapback, where Black Code 4S 16 (1.30) is 17 percentile points ahead. Every figure is a testing-machine result at a fixed reference tension.

Measured, side by side

Signum Pro

Plasma HEXtreme 16 (1.30)

Polyester · 16 ga

Tecnifibre

Black Code 4S 16 (1.30)

Polyester · 16 ga

Stiffness lower = softer, kinder on the arm
22691st pct
24398th pct
Tension loss lower = stays where you strung it
2535th pct
2637th pct
Energy return higher = livelier, more free power
8955th pct
9058th pct
Spin potential higher = more spin off the string bed
7.393rd pct
9.299th pct
Ball bite higher = grabs the ball harder
0.59495th pct
0.67499th pct
Snapback lower = strings slide and snap back
0.08126th pct
0.0739th pct

Bars are percentile against all 788 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 Plasma HEXtreme 16 (1.30) at 52 lb

String Black Code 4S 16 (1.30) at 48.3 lb 21.9 kg

Coming from Black Code 4S 16 (1.30) at 52 lb

String Plasma HEXtreme 16 (1.30) at 56.0 lb 25.4 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.

Plasma HEXtreme 16 (1.30) mains / Black Code 4S 16 (1.30) crosses

Stiffness95th pct · 1 measured
Tension loss35th pct · 1 measured
Energy return56th pct · 1 measured
Spin potential95th pct · 1 measured
Ball bite96th pct · 1 measured
Snapback21st pct · 1 measured

Black Code 4S 16 (1.30) mains / Plasma HEXtreme 16 (1.30) crosses

Stiffness96th pct · 1 measured
Tension loss36th pct · 1 measured
Energy return56th pct · 1 measured
Spin potential99th pct · 1 measured
Ball bite99th pct · 1 measured
Snapback13th 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.

Plasma HEXtreme 16 (1.30)

~30 hours of play

Black Code 4S 16 (1.30)

~29 hours of play

Both strings in full

Every published measurement
StringGaugeStiff lb/inLoss %Power %SpinBite COFSnap COF
Signum Pro Plasma HEXtreme 16 (1.30) Polyester1622625897.30.5940.081
Tecnifibre Black Code 4S 16 (1.30) Polyester1624326909.20.6740.073

Add a third string Plasma HEXtreme 16 (1.30) in full Black Code 4S 16 (1.30) in full