Ak(u) Seiba jyu ichi (アークセイバー11)
Launched before All England 2013, like most Yonex high end models making its debut at All England.
Arc11 incorporated new (Neo) CS carbon Nanotube, and Sonic Metal in the frame. In the T-joint, there's a lighter internal T-joint called the T-ANCHOR.
Balance point and stiffness are roughly equivalent...Marketed as a successor to Arcsaber 10, this racquet is a control racquet.
Max recommended tension is similar, i.e. up to 24lbs. Surprisingly, not up to 26lbs, given the trend of stronger frames like the Nanoray and Voltric series.
More to come...