Any preference between the ps audio and ifi?@b_limo ,
I was using 4 PSA Noise Harvesters in a power strip for my analogue; not much effect in lowering the noise floor.
The iFi AC Purifier is a fantastic little device which cleans up grunge on the mains and lowers the noise floor in a very audible way. More detail and separation of instruments than many power conditioners (and it's only $99).