Power Conditioners


Not sure if I placed it in the correct topic but here goes. I was just wondering how power conditioners work, as I want to buy one. There are conditioners with only filtered inputs and conditioners with some filtered inputs and some unfiltered. I believe the unfiltered ones are for analogue devices. But why should these go into the unfiltered part? If I buy a power conditioner for example with only filtered inputs, will I not be able to put my class A amp in? Or will it have a negative effect?
sjeesjie
Mk00

the answer is yes - others heard the difference easily. I have had a number of conditioners in the past.  None were cheap and none really made a sizable difference, but I wanted to protect gear.  My dealer suggested I audition a Niagara 5000. The difference was plainly and immediately audible. I didn’t have to squint and ask myself what was I hearing.  My reaction about 5 seconds into the audition was “crap now I’ll be spending $4k”.  Obviously, every situation is different such as quality of power coming into the house and the gear you’re using, so YMMV.  For what it’s worth, my local dealer told me that every customer who’s auditioned the Niagara at home has purchased one.  I was sincerely hoping to prove him wrong. 
For my "all digital sources" system, each time I've upgrade the power conditioner, the performance of my DACs improved.
I use SurgeX for all my network stuff, modem, router, NAS and a separate one for cable box, TV, sound bar.

I have dedicated 20amp circuits in another room for my main system, and use a Shunyata Denali 6000S/ V.2 for everything except subwoofer which is on its own circuit and it has a Shunyata Venom Defender on it. And of course if I’m getting a huge massive lightning storm I just disconnect everything.
@sjeesjie,
Did you get the power conditioner or still on the fence? I have a Inakustik AC-3500p in my system and love it. No negative on anything, except everything improves, at least in my system.