Clean Power without the drawbacks of Conditioning Filtering. Advice?

Hi-

From reading i see there is a lot of talk on the drawbacks of Conditioning filtering. Dynamics and freq. limitations etc.

I want to ask if there is a power strip+cord that are not filtering. I think i could possibly get away without conditioning.
From searching it looks like there are the cheapo strips that you don't want to use OR Conditioning strips.

Wondering if there is a good reliable strip that does not screw around with the sound and can also deliver to an 800w consumption tube amp.

Thanks!