I have the following Klipsch speakers used with B&K amps and 2003 issue 950:

mains- KLF30's
center- KSC-C1
surrounds- SB2's

Sitting in my sweet spot, which is approximately 10 feet dead center of all speakers I can hear know hiss whatsoever.

Cball,

I've had no experience with previous versions of the 950. Mine is a new one with all of fixes. It works absolutely perfectly and is dead quiet.

Jeff

Same experience but jury is still out on the reversed polarity bass output in the analog mode ... I need to do further evaluation.