The Pangea 9 gauge cord on the integrated will definitely increase the bass slightly. It is the 'trademark' of that cord. The 14SE pangea will improve clarity on sources.
The Shunyata Venom3 same. (but that is only hearsay, as i have never tried a Venom 3, but would certainly be willing to buy one as TAS gives it a good score.
Another item to replace is the wall receptical. No expensive one needed at all. A $3.00 20 amp Pass & Seymour from Menards will make a difference if you have the old receptical that was there when you moved in, still in the wall.
Stock recepticals are usually thirtynine cent junk.
Replacing the wall receptical is not hard, but the electricity MUST be turned off to that outlet to do it.
To change the receptical you would need a standard flat bladed screwdriver, a phillips screwdriver, and a needlenose piers. If it is too difficult for you to do, and noone to do it for you, skip it.
(Do NOT buy a Leviton receptical from a hardware store, tthose are really not good) Pass & Seymour, or a Hubble from an audio site. Cryoed one from Porterport here is an ecellent cryoed receptical for $35.00
Really the powercords and the powerline conditioner sort of outlet strip are doing the same thing. Cleaning the A/C power so the sound gets better. The result is smoother highs, clearer sound. less distortion.
The total result is kind of like having better components.
Some folks go crazy over these things. but the 'first step' is the biggest improvement. So a $50 to $100 power cord is going a long way to the same place as a $1,000 cord.
IF you only bought one cord, i would buy the Pangea 9 gauge two meter for your integrated. It should be clear to you that you can hear it make a difference when you put it on. IMO. If you cannot, you can return it. and only loose the shipping cost. A second cord is the source cord, either a Pangea 14Se or the Venom 3.
(i find it interesting so many folks offer advice: "If you only spend MORE you can get this..." Well i try to say you can spend LESS and do better.)
I really hope this helps out.