OK, here's a weird story. With my older Rotel pro-logic pre-amp I was getting a very annoying hiss out of all speakers. I spent hours tracking it down before I thought to disconnect the CATV cable.

That cut out 90% of the hiss immediately. OK so waiting for my 950, I ordered the cable isolator from Polk audio. Well it turned out the 950 came first, and of course I had to plug it in anyway.

Here's the weird thing, even though I know the cable coax creates a buzz/hiss issue, after installing the 950 there was no hiss of any kind! Even sticking my ear to speaker grill - zippo. This totally surprised me since I'd read other posts that said the 950 was more susceptible than usual, and I was expecting the worst.

Now if Polk will just give me my money back..