Power conditioners and power regeneration

This youtuber uses a gizmo to test noise on the AC line and compares it to Furman and AQ Niagara. 

In my system, I recently traded out an AudioQuest PowerQuest3 for a Niagara 5000 w Tornado power cable. The sonic result was a substantial increase in realism, among other things. I expected to be disappointed with the results from the trial, thinking the cost of the Niagara couldn't warrant the price tag. I don't want to remove the Niagara from my system now. 

Interestingly, guys over on WhatsBestForm say that running two Niagara 5000 is better than one 7000. One dealer I know also runs two Niagara. 

In my TV space, I run a Furman PST-8D. Now that I have a freed up PQ3, I'll compare them to see if I can see or hear a difference. 

@erik_squires What Furman gear models do you use for voltage regulation and surge protection?

Many manufacturers ask not to stack surge protectors with their uninterruptible power supplies, but those UPS's are some of the only gear I've seen that will control voltage (or at least measure voltage). 

Thanks for sharing links, Erik. I haven't come across voltage regulation gear aimed at the HiFi market other than the PS Audio power plants. It makes sense to me that "AR" would be useful for HiFi, not just the pro market. 

I use a UPS for my home network, and the UPS shows that my voltage is pegged at 120V with rare deviations here in Dallas. So I'm not certain I'd benefit from AR gear.

I do like how you've daisy-chained Furman components together to reach your desired feature set.