Stageline buzz

What sort of buzz should I expect when trying to use my Stageline phono stage, as I don't experience any noise with ie = CD etc. Via my 200&202. As obviously it gets worse the more the volume, I don't listen to classical music but it would be annoying on quiet passages. I have recently added a NAPSC and a Qaudraspire tuntable support to stud wall, would this echo the buzz.