Power conditioner vs use of a audio grade outlet?


If I have a $7000 Power conditioner and really nice power cables is there a need for audio grade outlet? Maybe it's a dumb question but if I didn't have this other good stuff maybe I should get an audio grade outlet.

Pangea seems to offer a good outlet for about 100 bucks. 

jumia

Hard wire the power conditioner quality power cord directly to the outlet wiring removing two connection points, the male plug and outlet socket.  Less is more.

I have an older house and my wiring is only 2 conductors. I have just yesterday ( weird coincidence ordered the 20 amp leviton unit from amazon ( got the orange one for a few bucks cheaper. I am wondering if I should crawl under the house and run a ground rod to the ground part of this outlet or just put a jump over to the neg side and be done?