Power - where to start? Mains, chords, conditioner, filter?


I have a decent HiFi setup with all power cables as delivered by the manufacturer of the unit. I am contemplating upgrading the power infrastructure, but is a confused where to start? What makes the biggest bang for the buck? Power chords to each unit, mains blocks, mains conditioner, mains filter? Any advice before I move into this world? 

I have a streamer from Innuos being used for Tidal and Internet radio. A DAC from RME and an integration amplifier from Musical Fidelity. 

I live in a flat in a capital and the electricity is probably good, but for sure the SQ is better late evenings, which to some extent is leading me down this route. 
mtraesbo
Maybe this is the appropriate place to ask a question I have wondering about for a while. What is the logic or the theory that enables an upgraded power supply cable to improve a systems sound quality? The power getting to the system is at the mercy of electricity supply company the electrical contractor who installed the switchboard, house-wiring and outlet sockets... It is hard to imagine how an improvement in the last few feet in that power supply chain might make a difference?
How is the Pangea Audio AC 9 MKII? I'm new at this power cable stuff and want something for my Krell Digital Vanguard and Vandersteen setup. Also, is isolating the Amp with a dedicated circuit and the rest of the electronics on a Furman PC a good layout?
Can you explain how this works and where it fits into the system?

From above:  An alternate route to a dedicated power line might be to purchase a YETI power backup system
https://www.goalzero.com/product-features/portable-power-stations/ 

A fellow audiophile just made me aware of this unit
- generates a perfect sinewave
- works just like a UPS
- but with a larger capacity
- handles large transients with ease
- on his system a YETI 1000 will run the ENTIRE system for over 5 hours
- you can leave it plugged in - or not


Also, I thought the power conditioners were supposed to really clean up the dirty power coming through the wall.  So why use a power conditioner if I'm going to upgrade the breaker, wiring, and outlet (which is not cheap)?

Cleaning the AC has an impact on sound.  It takes away AC noise that creates the black background, helps with having a clearer sound (less smearing), more definition with bass, etc.  Too much AC cleansing also can hurt the sound where it becomes not as musical for example the piano does not have the wood of the box sound.  You have to try these things to see what you like.


Happy Listening.