"Greenfield" flex conduit for DIY power strip?


Since I need a solid power strip that will not be moved around too much, I thought I'd pitch my idea. Using high quality outlets and ac plug:
Here's the layout:

copper gold plated wall outlet -> copper gold plated plug
copper gold plated plug -> "Greenfield" conduit with solid wires
"Greenfield" conduit with solid wires with hard connection to 2-Gang Weatherproof Electrical Box
2-Gang Weatherproof Electrical Box with 2 copper gold plated outlets.


<img src=" https://ibb.co/fkQafz ">



This seems like a natural extension of the in-wall wiring with high quality electrical connectors and the least possible count of connectors for a power strip.

Conduit and elec box can be filled with sand if vibration control is needed or beneficial.

Your thoughts?


gera
That is a similar approach to my own setup - I have a single dual-outlet with a 10 ft extension cord. The outside box is aluminum and grounded.

I use my own Helix power cable design to eliminate cable noise
http://image99.net/blog/files/category-002ahelix-power-cable.html

The greenfield flex conduit will impact sound quality and is unecessary in the home environment

Regards - Steve
Post removed 
"The greenfield flex conduit will impact sound quality and is unnecessary in the home environment"

What's wrong with that one? I ask because it's the closest thing to what's in the wall. Exterior flex conduit can be used as the shield, directly connected to the aluminum box and ground, no?