Anti-Cabls Ic's alternatives?

I have Anti-cable speaker wire in my system and really like the way it sounds. I'm thinking of also buying the anti-cable ic's to upgrade my Kimber PBJ ( these ic's sound very glaring to me, especially in the vocals).

My only concern is someone mentioned that anti-cable Ic's are unshielded and this can cause problems. Should this be something to worry aboout? I'm not too familiar with the argument of shielded vs non shielded so bare with me.

If someone has a better recommendation based on my sysytem then feel free at your suggestion and how it bested the Anti-Cable

NAD C525BEE > Kimber PBJ> Denon PMA 2000ivr> Anti-Cable> PSB Stratus Mini and PSB Image b25