I'm not sure that any high gain tube preamp and phono stage will sound completely quiet when the gain is turned up and there is no music playing. I have never heard such a piece. OTOH, I do agree that so long as the tube noise doesn't appear to be audible when music is playing, then there appears to be no problem and I also much prefer tubes over ss. However, I do wonder how much better the overall SQ, could and would be, IF no tube hiss was present whatsoever in the system.