Of course, I didn’t expect anything fancy from this iFi purifier, like i do with my AQ Niagara. But, it did some resolve a couple of issues with my monitors in my PC Audio/Office rig. Your mileage may vary depending on the default state of power quality in your house.
For example, here’s some dude on YT showing a demo of it in action (4:25) for one problem....
https://www.youtube.com/watch?v=X5V1JOSjbRA
Later on, i discovered that there was a malfunctioning dimmer switch hidden away in my spouse’s adjacent office room injecting noise. Any audiophile should get dimmer switches completely out of the house, or, at the least, put them in a fully ON/OFF state.
After such noise culprits are systematically eliminated, one should just get away from these type of bandaids and install a proper dedicated line and install something like a Niagara. If you need to break through a lot of drywall, etc, just move other lights, appliances, etc in that line to a different line, thereby, making it a dedicated line!
The Niagara, ime, is the best thing that happened since sliced bread for hifi. The reserve/supplemental current it holds/offers for some demanding tracks at high enough SPLs is even better than plugging amps into the wall (common tribal knowledge), whilst protecting all your amps. i.e., Niagara is better than wall for your high current amps. Power Regenerators (PS Audio, etc) = current limiting, no matter what the marketing is.. I haven’t seen any practically sized power regenerators with transformers huge enough to prevent that, if you have a big enough amp at high enough SPLs...it maybe works ok for dinky amps/flea watt amps and just other sources.
P.S Ah, it does appear that my post from last night looks "too exuberant" by normal Agon standards...could have been the Bourbon.