Head · Polyester
Head Sonic Pro
Unique co-polymer polyester with soft molecular construction
Performance ratings
Overview
Head Sonic Pro combines unique co-polymer polyester with a soft molecular construction for good touch and comfortable feel. "A great all-round string that delivers on its promise of control and comfort." Received remarkably low stiffness scores compared to most polys tested. Power level slightly higher than average for a co-poly. After an hour of hitting it softens up and feels livelier. Best in the mid-50s tension range - at higher tensions it plays too dead, lower tensions lose control. Budget-friendly at $8-12 per set.
Best for
- Budget-conscious players wanting poly
- Club players in regular competition
- Those wanting all-round playability
- Juniors trying polyester for first time
Not ideal for
- Maximum spin seekers (try Sonic Pro Edge)
- String breakers
- Those needing long tension maintenance
Pros
- Great value - budget-friendly
- Good all-round playability
- Comfortable for a poly
- Crisp feel after break-in
- Good control
- Accessible to average players
Cons
- Tension loss after 5-7 hours
- Limited spin (round profile)
- Not for string breakers
- Can feel dead at high tensions
Stringer notes
Budget poly option. Softens after 1 hour of play. Best at 50-54 lbs. Good for juniors trying poly.
Break-in period
1 hour. Softens and livens up after initial hitting.
When to replace
Every 7-10 hours due to tension loss.
Hybrid setup ideas
- Works as full bed
- Multifilament crosses for more power
Used by
Popular with club and recreational players
Specifications
- Type
- Polyester
- Construction
- Unique co-polymer polyester with soft molecular construction
- Gauges
- 16, 17
- Colors
- Black, White
- Set price
- $8–$12
- Reel price
- $90–$120
- Brand
- Head (Austria)
Sources & reviews
Data verified January 2025. Something wrong? Send a correction.
- Specs: Tennis Warehouse
- Pricing: Tennis Warehouse
- Review: Tennis Warehouse Review
- Review: The Tennis Bros Review
- Review: Tennis Creative Review