Static electricity: Unique to Vinyl Systems?

Most likely.

Did you also replace tonearm? You'll need to check ground path if there's continuity.

Marakanetz

The problem was noticed with my old vinyl rig, which was a Rega P-5 feeding a PS Audio phono pre amp. First I changed turntables (Clearaudio Concept mc, new tone arm), then changed to a Jolida phono preamp.
The reason that I changed was a loud transformer hum in the PS Audio (I decided to change TT because I wanted to move to a mc setup). The hum is fixed but all this other stuff is still there, and for the first time I've noticed it occurring when no records are playing.
I'm realizing the one thing that i haven't changed is the power cord (SHunyata
Hydra). I will change that next, but I'm wondering if it is a static issue or something with the main, although it doesn't affect the digital sources at all.

Sounds like pickup of RFI (Radio Frequency Interference) to me. Try turning off all fluorescent lights, including compact fluorescents that fit in incandescent fixtures, as well as all dimmer switches which may be in the house, and anything else that could conceivably be generating significant RFI.

Regards,
-- Al