Price: $9999


Jeff said: With exemplary build quality, and its ability not only to power large amplifiers and associated electronics with apparent ease, but to improve the sound of a system by eliminating noise, the GigaWatt PC-4 Evo+ really does do all that a power conditioner can be asked to do.

Read the SoundStage! Ultra review.

The gist: Super-solid power conditioner that many don’t know about.