I've run the same test and noticed a louder then normal noise floor. I actually had one of the first shipments from the beginning of April and I also noticed a louder amount of hiss coming from my speakers as soon as I plugged it in. I was running a Yamaha RX-V3000 with a Parasound 2205 amp and I never noticed any hiss, even at really high volume. However, with both of my 950s, April 4th and the new April 30th shipment I do notice much more hiss coming from my speakers. It is definitely coming from the outlaw. I have run numerous test and even switched back to my Yamaha. I'm not sure if it is normal or a problem. Overall, I'm very happy with the 950, however for a product that is supposed to be ultra clean, I find it odd to have way more hiss then my receiver.

Dan