It is most likely coming from the pre-amp, since it changes with input selection. Some components are quieter than others. I have experienced it through the years with differnt components. Nothing I tried helped. e.g. ground changes, cable routing, component placement, etc. I know it bugs you but I think you are opening a can of worms that could ultimately cost you your sanity. Luckily I gave up before I got to the point..hee hee ha ha ho ho their coming to take me away ha ha:)
Very slight "Hiss"
When I press my ear next to the tweeter, either channel or input selection, I hear a "hiss". I have tried chokes, and changed physical position of IC's. However, I noticed that if I select an input that has nothing connected to it, the hiss increases. The hiss is small, but it really bugs me all the same. Might there be a way to eliminate it??
Thanks.
Rpg
Thanks.
Rpg