My Primaluna EVO 400 pre and power amps are plugged directly into the Hubbel wall outlets dedicated line. Since I don't leave these tube amps on 24/7 it is easy to just leave them unplugged when not in use and when I am not around to monitor lightning storms.
The CD transport and DAC are left on all the time and plugged into a Shunyata Hydra 4. These two front end components are also fitted with DIY ground boxes via RCA component connection (ie "signal grounds.")
This has been a very satisfactory arrangement.