Eaton 9px as audio power regenerator?

I was looking at prices of audio power regenerators; I then thought of alternatives.
Does anyone here have experience with the Eaton 9xp? It's a double conversion UPS.
I would probably switch out the fan in it if I was to purchase one.
I just don't have the cabbage for a PS Audio regen.
I live in a condominium, enough said....
I was listening to some Jeff Healey Band; as I noticed the light above me fluctuating in brightness. I didn't notice a change in sound quality, but it got me thinking.
What do you all think?

Thanks for any input!