Basic surge protection with some noise filtering without strangling the amplifier?

Isn’t "voltage regulation" one of the three pretty critical components to proper system protection and filtering/performance?
I only mention because the OP mentioned "....without strangling my amp"
Wouldn’t stabilized voltage delivery be critical?
I have a neighbor who welds quite a bit, and my lights will dim a little when he’s doing a fair bit of plasma cutting and welding. 

Having good voltage is critical, but I find this really variable in terms of how many really need it.  Personally I use a Furman voltage regulator to keep my system within 5V all year long and regardless of how hard the AC is running.   I first got it because I was in a San Francisco high rise with 130V coming out of the wall!  Within spec but a little worrisome for me. 

While Furman AR (automatic voltage regulation)  is a lot more cost effective than say a PS Audio power plant, it’s still not cheap.  If you find your lights dimming from another home’s usage though you may have other issues.  I’d suggest getting a plug in AC volt meter and measuring how bad it gets.  If it’s bad enough your first call should be to the power company or an electrician. 

If it’s within spec then yes, a Furman with AR is a fabulous device which keeps your gear behaving optimally. 

@kirkwallace I don’t know how you validate their claim except to research reviews to see if anyone has had problems.  If you don’t trust that claim in the product specifications how do you trust any claims.

Exactly, in part, why i started this thread. Short of finding independent lab test reporting that is peer reviewed and validated, I am interested to hear what others have experienced.  @ghdprentice , for example, reported that he has had bad experiences with these sorts of devices, although maybe not specifically with one as basic as the Furman PFi.

If it’s within spec then yes, a Furman with AR is a fabulous device which keeps your gear behaving optimally. 

Thanks @erik_squires !  You were actually who I was thinking of about wall voltage regulation.  I have actually contacted the power company to do some diagnostics on thngs at my house: voltage spec being one.  But always great advice man and thanks for the recommendation on a Furman unit.  Yea...they ain't cheap, but I check on HiFiShark now and again for a used one, or a PS Audio power plant.

Yes, thanks, as always, @erik_squires . This conversation about voltage fluctuations so piqued my curiosity that I went ahead and ordered one of those AC plug in volt meters that you linked. (Feeling very “I gots to know.”*)

Obviously it does not provide any voltage regulation, but, Erik, do you by chance have a view on the Furman Elite PF-15 (or -20) PF i unit? 

*For the Dirty Harry fans out there.