The KS-6063 is an upgraded version of the KS-3033, with more conductors and a mixture of solid-core and variable strand copper conductors. The KS-3033 does not use solid-core conductors.
Likewise, the KS-6065 is an upgraded version of the KS-3035, with more conductors and a mixture of solid-core and variable strand copper and silver conductors.
The KS-6068 will have solid-core and variable strand silver conductors.
I think Kimber is also designing new collars for these wires. The mixture of solid-core and stranded conductors is supposed to improve the sonic properties of these cables.
Likewise, the KS-6065 is an upgraded version of the KS-3035, with more conductors and a mixture of solid-core and variable strand copper and silver conductors.
The KS-6068 will have solid-core and variable strand silver conductors.
I think Kimber is also designing new collars for these wires. The mixture of solid-core and stranded conductors is supposed to improve the sonic properties of these cables.