New House, Old Wire

I wouldn't worry about it. Ungrounded lines always provide a more pristine and musical presentation because common grounds induce much noise into the AC.

If you're worried about electrical storms, simply unplug your equipment during those times.

But if your landlord is that accommodating, perhaps you could instead ask him for cryo-treated romex (house wiring) and audio-grade wall-outlets. :)

-IMO

I'd get rid of the surge protector and go with an audio-grade power bar. Although I've never used one the rumor is stong that surge protectors of any sort induce sonic harm to one degree or another.

Good quality power bars/strips typically sell for roughly $200 to $500 depending on mfg'er. I have an extra brand new power bar/strip with hubbell hospital-grade outlets where the entire power bar and contents are cryo-treated that I'll sell you for well below retail if you'd like it.

In the meantime, I'd stay away from the Fellowe's cheater plug and go with Home Depot's or Lowes' best industrial grade cheater plugs if there is such a thing. Otherwise, just stick with the standard Home Depot variety until you can find better grades for maybe $5 to $10 a pop.

I would never underestimate what good quality electrical products v. poor quality electrical products can do to a system. And since even good quality electrical is typically rather inexpensive, why gamble?

-John