DC Power/AC Inverter power supply

I agree with the above. Inverters are EXTREMELY power hungry. Most are FILTHY in terms of electrical and RF hash & trash. I can't see the benefits coming anywhere close to the amount of hassle one would have to go through.

If you are THAT worried about it, i would suggest buying a large commercial grade generator that is rated for well above any demands that you might draw from it. You will have to deal with housing, muffling and exhausting such a device, but it would give you what you are seeking with the potential for near unlimited voltage / current supply. You would also be self sufficient in times of power outages, etc... TALL cash, but then again, maybe it is worth it to you. We've all got different priorities and amounts of money to play with. Personally, i would LOVE to have something like this. Sean
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Please note, I don't intend to use this set-up for amplifiers! Also, I won't be connected to a battery charger during listening sessions.

Maybe Jeff Rowland's technical article will illuminate the subject (see his website). I use a battery power supply for my amp and just replaced the SLC battery packs and felt the sound improved- more vivid and alive than with the old batteries. Same virtues of zero noise and incredibly black soundstage. Alternately, I use an ExactPower for the front end components and feel better knowing I'm sort of off the San Francisco grid. Plus there's the input isolation transformers and the AC regeneration in the preamp etc...May be overkill and I don't A/B as much (no time/patience) to test but at least I feel confident throwing heavy duty over-engineering at the job.