Dunlop redesigns the Srixon CX 4.0 with some extra power, stability and spin. Named the Srixon CX 400, this racquet is perfect for the intermediate player looking for a lively racquet that delivers easy access to spin. At under 11 ounces strung this racquet should also work for the rising beginner who wants a racquet that will reward continued improvement. In addition to its speedy Aero-Box frame design, this racquet's Sonic Core technology has been updated with Infinergy, a uniquely elastic material that makes for a more dampened and comfortable feel at impact. The CX 400 also gets Dunlop's new PowerGrid StringTech system, which features wider crosses in the upper half of the stringbed, resulting in a friendlier, more responsive feel on balls hit in the upper hoop (a location that typically comes with higher levels of shock). From the baseline the CX 400 feels firm, accurate and lively. It's not only maneuverable enough for less advanced players, but the near even balance and 71-RA give it a solid and powerful feel at impact. Full swings deliver impressive pace, and the open string pattern definitely helps with spin. At net this racquet comes around with decent speed, and the weight distribution gives it impressive stability for a sub-11 ounce racquet. Player's looking to serve more aggressively will find enough precision, spin and power to force weak replies. As the lightest member of the CX family, this racquet's combination of maneuverability, power and spin make it an obvious choice for the rising player looking to start playing more aggressive tennis.