I use a Hydra type plug so it all earths there, including the TT Its always quiet, but I admit earthing is another black art.

I have had a shuffle around in the rack and found positioning of the Paradise critical. I bought an Opus CD player in the hope of better distribution on my rack (2 half width cases, transport + PS) but the Paradise wasn't happy till it was on the shelf alone.

I found it susceptible to hum from adjacent to rather than above/below, I s'pose motors and torrid have differing electromagnetic fields?