Symptoms of UN-CLEAN power

Both my Bryston Bit-15 "Enormous Transformer in a Box" power conditioner (bought because it was on sale and has lots of outlets), and my fabulous sounding Pass XA-25 (among other components) are being used with the supplied heavy duty but NOT "boutique" power cords. I challenge anyone to listen to my gear heap and tell me why I need expensive AC cables. However, nobody can meet this challenge as I’m not letting them near my house, and if I find somebody has snuck in I’ll kick them out. That said, I do have a few large fancy power cables because I like they way they look.

Bright, harsh, shrill. And this was from an all tube  system. Fast forward to Equi Tech and Balanced Power Technologies. Also, in my system power cords do make a difference. Looking to move to the country though. Will report back.

Just curious/cross my mind: 

a) How bad does power from an inverter sound? 

b) In this contect, how does my generator (say Honday EU3200i, 3200W) sound (I am actually running 2x 2000 to run the roof AC if needed)?

@falconquest I read one time. All AC 'cleaners' deal with the AC side. All my stuff runs off DC. How much of the AC "dirt" is making it into DC (with all the filtering in the conversion process). Or rephrased: how much different does 100% battery DC look compared to DC made from 'cleaned up' or 'dirty' DC. 

And one step further (recently saw the battery pack at my friends PV system): for those spending $100k or $1000k on their system: Why not make a DC system, fed from a simple bank of batteries (like those used for photovoltaik system all over the country). And charge the batteries (with dirty AC or the sun) during OFF times?

Balanced power is not a “cleaner”. It is a design principle that is explained in the Equi-Tech white paper. This is completely irrelevant when it comes to DC current from a storage source. How are you powering equipment with DC? Or did I miss something?