Signum Pro Plasma Pure is a high-tech co-polyester string that feels like the “softened cousin” of classic control polys. It’s smoother, easier to handle, and stays playable after several hours heavy hitting. Plasma Pure is different from many of its competitors because it focuses on playability and comfort without sacrificing reliability. This is why it is worth testing for a wide range of players.
This version of Signum Pro’s Plasma family has a rounded profile and aims for minimal tension loss, decent power, and excellent ball control, all while being more comfortable than many traditional polyester strings.
Tech & specs
- Profile: Round
- Gauge: 1.23mm / 17
- Material: Co-polyester
- Available Colors: White (Also comes in orange)
Playtest Impressions
Signum Pro Plasma Pure isn’t a “lively” or overly powerful poly; it’s more of a controlled playability string. Launch angles are stable, the depth feels manageable, and the string doesn’t snatch too much or give you extreme pop. Traditional polyester fans will love that predictability, but this one is much more comfortable and less harsh than many old-school polys.
The round shape doesn’t generate huge spin, but it still bites well without the snap-back aggression of textured or shaped polys. The tension loss is minimal over sessions, and doesn’t lose shape after several hours hitting.
Plasma Pure feels softer and less rigid than classic control poly strings. This makes it more comfortable during longer rallies. It won’t have the strong power of newer elastic co-polys, but would those who value control and stability with a little softness.
Pros & Cons
Pros
- Dependable, controlled response that inspires confidence
- Minimal tension loss – stays consistent across sessions
- Rounded profile is easier on hands and arms than many polys
- Ball control is reliable without being dead or muted
- Comfortable for a co-poly string — forgiving on longer rallies
Cons
- Not a powerhouse – lacks the explosive pop of modern elastic polys
- Spin access is solid but not extreme
- Players seeking a very lively or high-RPM feel might find it too reserved
- Comfort is better than many polys but still not as plush as multis
Who this suits
Best For:
- Players seeking predictable control and stability
- Baseliners who prefer accuracy over power
- Those who want a softer feel from a polyester string
- Anyone who plays extended sessions and wants consistent tension
Not For:
- Players after explosive power or huge spin
- Flat hitters who need higher launch aggression
- Those who want maximum pocketing from their string
Comparable strings
Signum Pro Plasma Pure sits in the mixed control/comfort space with these strings:
- Luxilon Alu Power – Cleaner, crisper feel; Pure is softer but slightly less penetrating
- Yonex Poly Tour Pro – Tour Pro feels slightly firmer; Plasma Pure is more forgiving
- Signum Pro Plasma Hextreme – Hextreme offers more rotational grip; Pure is balanced
- Silvester Energy – Slightly fuller feel with softer power and durability focus; Plasma Pure is firmer and more tension-stable.
Final verdict
Signum Pro Plasma Pure isn’t trying to be among the loudest or most colorful strings on the market, and that’s what makes it so appealing. Its main strengths are that it maintains playability over several hours of heavy hitting, has good control, and is more comfortable than many other co-polys.
Plasma Pure is a middle ground between stiff “tour control” strings and ultra-elastic spin strings. This is definitely worth a try if you want a co-poly that feels less demanding but still retains consistency and tension over time. If you are looking for a firmer, more spin focussed string you might want to look elsewhere.