Tripp Lite?

In regards to Isobar surge protectors, I stand corrected... but!! It seems that this was a change I was not aware of.  My bad for not keeping current. 

Based on help from ChatGPT, it seems Isobar models around 2015 did NOT have the shutdown feature, but Wirecutter by 2022 is praising them for including them. 

So thank you for the correction, and if you have older Isobar models you might want to check the specific model number against the product manual.  

Even so, you might want to consider the Tripp Lite TLP1008TEL as a better alternative because of it’s lower let through voltage according to Wirecutter. 

Those $50 units are really hard to say no to, but for anything audio the extra $110 for the Furman PST-8 should be considered. 

OP:
 

Let me geek a little more on Tripp Lite.  I have 3-4 of the Isobar surge protectors.  The big plus is the metal housing should be more or less immune to fires started by exploding MOV's, unlike a lot of plastic housed surge strips.  

The bad news of this particular model, as noted by many others, is they do not disconnect when the MOV's are exhausted.   This is a feature many other surge strips have.  That is, when the Isobar can no longer protect your gear it is still on.  Your only indication will be that one of the two green lights goes out.  

For some of course this is a feature.  They want the strip to provide power even if the surge protection isn't working.  

The Tripp Lite models in the wirecutter article have this shut off feature. 

OK, so that's it for Tripp Lite.  Furman units with SMP and Extreme voltage shutdown (EVS) _will_ turn the power off for long term over/under voltage situations.  If you get 200V, that may be too low for a lot of MOV's, but the Furmans will see it and shut down power.  Same for extreme brownouts, which in some cases can melt a switch mode power supply.  So you are safe from actual surges as well as low-grade under/over voltages.   Double check that the Furman unit you are considering has SMP and EVS though, they make many that do not. 

Hey.  

Wirecutter rates some Tripp Lite surge protectors extremely highly.  They are the only source of 3rd party testing for surge protectors I know of.  They rate Furman's higher though.  :) Take a close look at the specific models they mention.  Trip Lite has introduced other models since Iso Bar which perform better.  I wrote about this in depth here and a link to the Wirecutter article is in here too.