This is a public service announcement. The Infinity Speaker Cable II Filters (which I guess is now called the Infinity SC Quantum Filters) does work with Synergistic's Tesla active speaker cables. The Infinity SC Quantum filters arrived today along with three Infinity DIY Filters. First thing first. I wanted to evaluate the Infinity SC Quantum Filters but I needed some sort of judgement criteria. So I listen to the effect of Synergistic's Tesla speaker cables while activating and deactivating the speaker cable. The affect is modest, I would say like getting alittle clearer sonic overall picture. Next I hooked up the Infinity SC Quantum Filter. Wow! The affect is much more pronounced. Yes, the highs obtained a much more purer tone while also standing out, like if someone had flip a brilliance switch, like hearing live music. Next I placed one Infinity DIY filter in my CD player, amp and circuit breaker. The sound immediately closed in, so I know the system with the Infinity DIY Filters is going to that a few weeks to break in.