Power conditioner help

There is a wealth of information here. Atmasphere, where does get one of these Elgars now?

Ebay and Valuetronics are two good sources.

From Atmasphere "An isolation transfomer that is being used as a passive device will contribute harmonic distortion to the AC output....  "  I suggest we must also keep in mind transformer impedance drops whenever it's used at less than rated capacity.. 
Another challenge for transformers is the multitude of AC line harmonics coming into homes , and harmonics being generated by electrical devices within homes,from laptops to phone chargers to microwaves. I feel 
"Electro-Pollution" concerns will be increasing to average consumers in the near future. GREENWAVE is one company focused on this.The newer 'noise sniffers' I see becoming rental products. I much appreciate products like Equitech's Q series of balanced transformers with additional noise filtering. I think any balanced transformer, actually any transformer, would benefit greatly from a reduction in incoming ac line harmonics; just as industrial users do. Suggestions atmasphere?

Thanks Atmasphere, and everyone else as well for a very informative discussion so far. I have a lot of homework to do.

I think any balanced transformer, actually any transformer, would benefit greatly from a reduction in incoming ac line harmonics; just as industrial users do. Suggestions atmasphere?

Of course! Line harmonics are quite deleterious to transformer operation.

The Elgar so far is one of the few conditioners I have seen that can actually filter out line harmonics, but if you have an Elgar, no need for a transformer after it!