Types 9 Low-Distortion & Low-Noise speaker cable is essentially Type 4 with better metal, and with added layers and techniques of Noise-Dissipation for more effective noise control than any previous Type 4 iteration.
In addition, Type-9 conductors are a little bigger than previous 4-series cables. The conductors are a little farther apart, reducing interaction between adjacent conductors by 35%.
Solid Perfect-Surface+ Sonic-Signature Conductors
Multi-Layer Carbon-Based Noise-Dissipation and Direction-Controlled Conductors
Star-Quad Geometry