The fabulous Voltric 7 boasts the TRI Voltage system-
The stiff racquet structure at the top of the frame head allows the head to bend in a very controlled way and hold shuttles on the string bed for longer. The thin frame sides then allow the frame to flex more and transfer more energy to the shuttle. This combination allows you to smash with instant power.In VOLTRIC, the weight is balanced on the top of the frame and at the joint area which allows good handling while also maintaining power. The thin sides of the frame and at the top of the head reduced air resistance and improve the handling even further. Players can now make a full swing even during short range rallies as VOLTRIC responds instantly to even subtle movements.
Another innovative Yonex technology, SOUND FILTER uses new materials at the two and ten o'clock positions to reduce only high pitched and dull soundwaves. This produces a louder and sharper sounds on impact to unsettle opponents, and provides a more aggressive tone to your game for a relentlessly attacking style of play.Developed by Yonex, the Isometric Square Head Shape provides a 32% larger effective hitting area than a conventional racquet. 
Unlike an ordinary racquet, whose main and cross strings vary in length, the Isometric Square Head Shape equalises the length of main and cross strings in the string bed and enlarges the 'sweet spot' for more consistent shot accuracy - even on off-centre hits. And finally 
Moulded deep into the layers of graphite where the frame connects with the shaft, the Yonex Built-in T-Joint creates a durable and high-strength one-piece frame that is torque-free. This patented construction results in more powerful and accurate hits. Buy this racket and receive a Free Karkal LG Grip.