Car Battery as Power Source

Fully concur with Seandtaylor99's entire post.

So, what if I used one of these Pure Sine Wave inverters?

Also, my monoblock amps require 75Watts ea. to operate. So, they don't require much power. Maybe a couple of these inverters with a couple of Optima batteries and I'm in business huh?

Although, from a practical point of view( as opposed to my theoretical and just bored POV) I probably won't realize a material difference in sound if my current electricity is relatively clean when I listen true?

Does anyone know if the PS Audio P300 etc. convert AC to DC and back to AC again within their units?

Here are the inverters I was mentioning:

Inverers

Unless someone has tried it with your equipment I think you'll have to try it, though I wouldn't be surprised if it sounded worse, not better.

Some powerline filters do regenerate the AC. They tend to be the more expensive ones, as they are really no more than a very high current output power amp. You're effectively using a large power amp to power your system.

Yeah, Seandtaylor99, you're probably right. I'd bet it'd sound the same at best.

Maybe it would have more of an impact on just my tubed phono stage.