I was wondering if it would be possible to run my components(SACD/CD and HeadAmp) off battery power without having to get rid of the tranie in the components and without doing mods on the components themselves. In other words, just plugging them in to into some battery power source that supplys wall current.

The reasons are that I still have a warranty on the CD player and it is relatively new - I don't want to work on it yet. And the power in my old, rented house is just horrible, dirty and unsteady. I can't replace the outlets and circuit either. Also, I've heard that battery power is the cleanest power you can get short living next to a reactor.

Sure.

Get an online UPS system. Or at least a power conditioner. They run anywhere from $100 up (and up and up.. over $20k!)

The latter stores energy in transformers and capacitors, and regulates your crappy wall voltage into something more presentable... the former runs a charging circuit and an inverter to get normal wall voltage off 12V batteries. These can cost, especially ones that are true sine wave output and truly online (running from batteries always)... around $1000 for something stereo-sized. Has the added benefit of working when there's no power at all, unlike the conditioner that only fixes sags and brownouts that only last a second or two.

Where could I take a look at or inquire about the UPSs?

I actually have a Monster HTS-2000 plc. It helps but does not do enough. I took my CD player over to my neighbors house(he has new outlets and wiring). I also kept the headphone volume knob on the player at the same position to compare, everything finally sounded like it did at the store.