Power conditioner or not?

@lamcam:

Providing answers to the following might make your thread more rewarding:  

Have you utilized PC in the past with other gear and found it helpful? 

If not, what is it about your current system's performance that makes you wonder whether you might need PC?

What is your budget ?

. 

My system has all-digital sources (Roon server & disk transport) with a DAC that is separate from the preamp.  I have found that conditioning the power improves the performance of my DACs, most notably tightening up the bass and improving the stereo image and soundstage.  Each time I've improved my conditioner, the sound quality improvement is immediately better.  I can't speak to whether power conditioners would improve a system with analog sources, but I'd say "yes" to those with digital sources.

How do power conditioners work? 

I assume they try to filter out variations of voltage but it's AC in and AC out.

They also must have a circuit breaker to try to block spikes in voltage caused by lightning or other big shocks. 

I am confident that most quality equipment designs in beefy transformers,  rectifiers and filter capacitors that handle most anything they are likely to encounter.  

My experience, with the PS20 and 15 is pretty good, my soundstage and clarity improved, as it did and measured distortion. 

My high power hungry Class A amp opened up and became a lot more dynamic.

In the USA I would grade the results about 7-8 out of 10, in Spain 6-7  out of 10. Maybe the difference is between 110 and 220?