You guys are geniuses! Simple thing removing the ground wire between the TT and the phonostage. I would never have thought of it. Thanks a million.
New Sugar Cube is picking up hum from phono stage
Phono stage is the source of the hum. It is in my new system and the phono stage is a PS Audio Stellar. The ground wire is secure between the TT and phono stage and there is no hum if the Sugar Cube is powered off. It is a low level 60 cycle hum. The new Sugar Cube is model SC-1 Plus. I have tried moving the two units apart, up one shelf, but that made little difference compared to stacking them. I would like to add a shield between the two components and stack them. Has anyone had a similar experience, or can offer advice or reference guidance?