Surge protection for SF Line 3

I have had consistently good service from the MIT series line conditioners. I started with the Z-center for all my front end components (amps were plugged directly into the wall), including my SF Line 3 and it has been synergistic and effective. A while later I also purchased the MIT Z-Isolator HC which I now use solely for the Line 3 (all else still into the Z-center).These were both highly regarded units back when the Spectral/Watt Puppy scene was front-page news and they are still well regarded by many I believe (me at least!). They can often be found on this site for bargain prices (Ask the seller if the blue power indicator light still works on his particular unit, it's the only thing that was ever known to fail). Good luck,

Shunyata Hydra 4 worked great without any issues with my friend's SF Line-1.

If your concerned about power surges and restoral of power spikes, then get with your power company and see if they offer a surge protection device which mounts onto the outside power meter (they pull your meter from the box, install a surge protector which is similiar in size to the meter & then re-connect the meter to the surge protector). I've had one for several years now, and have never had any worries. My power company charges $4 per month -- oh well, a simliar device, which I'll call a Transient Voltage Surge Suppressor (TVSS) made by Square D is over $1K and doesn't include installation -- let alone getting an act of congress to approve the install to the power meter (which no one owns but the power company). Several years ago, a lightening strike hit across the street and that house lost practically everything plugged into the wall (TV's, Computers, Fridge, etc).

I highly recommend the Richard Gray system since it is a "parallel" conditioner. Chris Johnson is probably most concerned about current limiting - NOT an issue with the RGPC 600 or 1200 (or even 400). Being a parallel conditioner, it is the most effective at eliminating line noise without imparting it's own signature.
My experience with the Hydra is that it was a little too smoothing for my system but may work for you. But, again, it will be inline with the power and probably what Chris Johnson is suggesting you avoid