Arcsabers Kaizen

The arcsabers are revamped this year like Arc11 and Arc FB. Last year, there's arc i-slash.

Previously there's new technology to augment Arcsabers (even balance racquets) like the Z-slash, 8-DX and now the FB. Surprisingly, there's constant improvement or in Japanese, kaizen (改善).

I reckon, even balanced racquet need the extra (even infinitesimal) boost to the playability. Even balanced racquets are harder to use compared to head heavy racquets (or forehand biased) or headlight racquets (backhand biased racquets).