HTLearner,
Let us know if the Panamax improves anything. Since you are using Outlaw amp and cables, the "system" should be compatible by design. Did you use your Denon 2800 as a preamp? I was/am considering that approach as well, though it seems buying a receiver is a waste if you don't want the amps. I do like the 950, except for the hiss, which seems to be the same loudness in all 5 channels.

I will be working with Scott next week to see we can find a way to reduce the hiss to acceptable levels, but it doesn't appear that anyone has successfully gone from too much hiss to minimal hiss. It is more "hiss-and-miss" from unit to unit or system to system.