Best power cord for a preamp?

I'm hoping for an upgrade in sound - dynamics clarity nuance fullness detail speed., all those things that increase emotional involvement, ... just hoping some with great separates have been able to do some comparisons at a high level. MIT's  latest efforts are 'very' pricey - and not available in my area. 

Just your comments - of your experiences, with separate components - are much appreciated :)

Reply's so far seem questioning; similar to salesman trying to determine what I want to buy? I'm hoping to learn - and possibly discuss what's new and exciting in power delivery. Marketing 'lingo' is just so extreme that it's somewhat annoying. For example "QR/BB'  'technology.  Near as I can figure an effort to hide the fact it's a capacitor on the line. Not really that new or exciting :)  But- capacitors are effective.

Borrow from the cable co. Sometimes you have to spend money to get what you like.

Look at this:

Furutech project V1 
https://www.whatsbestforum.com/threads/furutech-project-v1.34714/page-2