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Gamma Obsidian 13mm vs Vatic Pro Alchemy 13.5mm

Side-by-side comparison with lab-tested specs

Specs Comparison

Spec
Gamma Obsidian 13mm
Vatic Pro Alchemy 13.5mm
Price
$159.99
$179.99
Swing Weight
115
113
Twist Weight
6.05
6.04
Weight
8 oz
8.3 oz
Core
13mm
13.5mm
Spin
1702 RPM
1704 RPM
Shape
Elongated
Elongated
Face
Carbon
Carbon
Balance
237mm
232mm

Gamma Obsidian 13mm

This paddle delivers crisp 13mm feel — a versatile option in a elongated shape.

Pros

  • +Elongated shape gives extra reach on defense, overheads, and two-handed backhands
  • +Thin core (13mm) gives a crisp, responsive feel with fast feedback
  • +Competitive price at $159.99 (below the $197 average)

Cons

  • −Limited spin at 1702 RPM (bottom 10%, avg 1988) compared to newer paddles
  • −Narrower face means a smaller horizontal sweet spot
  • −Very thin core can feel harsh on mishits and may cause arm fatigue

Vatic Pro Alchemy 13.5mm

This paddle delivers crisp 13.5mm feel — a versatile option in a elongated shape.

Pros

  • +Elongated shape gives extra reach on defense, overheads, and two-handed backhands
  • +Thin core (13.5mm) gives a crisp, responsive feel with fast feedback

Cons

  • −Limited spin at 1704 RPM (11th percentile, avg 1988) compared to newer paddles
  • −Narrower face means a smaller horizontal sweet spot
  • −On the heavy side at 8.3 oz (88th percentile) — may cause fatigue for players with arm issues

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