When you have the volume control at +10db, you are running the 950 in an unrealistic situation. Assuming the rest of your system is performing normally, if you played a movie or CD at that level, you would blast yourself out of the room.

Any component will generate some hiss when it's gain is set to maximum.

I was one of the original prople who complained about the hiss problem since my speakers have efficiency of 106db/watt, which is way more than any consumer speaker you can buy. The current blue dot 950 is quiet enough so that the hiss cannot be heard at the listening position through these speakers.

If you are hearing hiss at the listening position at levels that are not unrealistic for even high volume listening, something other than the 950 is amiss in your system.