Looking to buy a power conditioner


I'd like to add a power conditioner to my system. Prefer to buy used. Recommendations please. I have a dedicated power line for my system.
Thanks for you input.
larseand
Check this one out https://forum.audiogon.com/discussions/puritan-psm156-2 . I got one to audition and kept it. So far, I'm only using it on the front end components. Enjoy the journey. 
My main system has 2 Shunyata Hydra 4 and a Hydra 2 power conditioner. My other system has a Furutech E-TP80 conditioner.  I am thrilled with both. 
If you actually think you need one you may find this of interest:

https://www.youtube.com/watch?v=QQ22BxjA-T4

A dedicated line removes any interaction of your system with other electrical devices in your home.

If you are concerned only about surge protection, you may want to consider a whole house unit at the service entrance.

I hope this helps!
Been using Furman for many many years, they stand behind their products, 
   They shut down my system completely, and helped save my gear one stormy night.   Will always use them in my system for protection and noise free audio.