Power conditioners and power regeneration

@oddiofyl - The rectification happens on the secondary of the transformer. Meaning it doesn’t "know" that the primary is balanced or not. It’s perfectly safe to use with tube gear.

Please keep in mind that whole-house surge protectors have high clamping voltages compared to the best point-of-use surge protection. About 600V vs. 200V. Whole-house suppressors are not intended to be the only surge protector in your home, especially for delicate electronics.  I've lost a laptop that way.

Having said that, tube gear by nature of the higher working voltages may be less susceptible to your average surge.

@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). 

@classdstreamer There’s a couple of reasons for that. One is that UPS output often has a lot of harmonics which can trigger a surge protector, and most surge protectors use parallel protection which could short the UPS output. The other is the generalized fear of users putting low current extension cords downstream. The nightmare scenario which fire departments often have is a chain of unfused strips overloading. None of these issues apply to me.

You can get Furmans with both AR (automatic regulation) and surge protection (LiFT + SMP) , such as the P-1800 AR but in my case the voltage regulator ( https://amzn.to/3E5JesI ) is before the Furman Elite 15i. This wasn’t a great plan, but now I can keep my HT equipment on a different surge protector than my DAC/amplifier, and everything is voltage regulated.

Keep en eye out for open box deals, and know that Furman has made like 3 dozen models... so there’s a lot of other conditioners thave have these features (AR + Lift and SMP).

The reason I ended up with such a setup had to do with living in San Francisco and getting 130 VAC or higher regularly. The AVR has kept the voltage between 118 and 123 no matter what is playing or where I was.

Unfortunately my HT system shares an outlet with the porch and when the workers would start their circular saws the regulator kept engaging to keep the voltage at my equipment solid.

Thanks Erik !

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.