With roots that extend back 40 years to the original Black Ace 93, this racket features the legendary engineering of one of the game's most experienced racket manufacturers.  At roughly 318 grams strung, the Ki Black Ace (300g) is designed for intermediate and advanced players. The feel is exceptional thanks in part to its 21mm straight beam and flexible RA stiffness. Although the lighter than a traditional player's racket, the Ki Black Ace (300g) has decent stability for the weight. This is partly due to its Kinetic Technology, a time-tested system that uses dynamic mass to help the racket plow through the ball more effectively. Other notable technologies include a Kinetic Comfort Handle System which reduces harsh vibrations for a cleaner feel at impact. In keeping with its innovative pedigree, ProKennex gives this racket FlexLogic to help it bend more optimally at impact. The upshot is reduced head deformation and increased dwell time, resulting in better control and easier access to spin. From the baseline this racket offers offers a great balance between speed and stability. It comes around with decent speed while still managing to feel solid against higher levels of pace. In addition to giving you the needed control to swing for power, you'll find more than enough spin to bring the ball down hard. On service returns the Ki Black Ace comes around fast to offer easy targeting on full swings. Although it doesn't feel quite as solid as the 315g version, this racket still manages to offer decent stability when redirecting higher levels of pace. Intermediate and advanced players looking for a light player's racket should give this one a serious look. The arm-friendly feel is a nice bonus.