Since what you are asking about is the experience that we posters have with the list given, I will offer this. I liked the idea of the Tripp-Lite products, but in practice did not appreciate the build quality of their newer units. I did not feel that they improved the sound as much as they simply protected the audio equipment. Fair enough.
As I recall, the Decware unit had some design aspects to it that I did not appreciate, though I have never owned one. Just to say that the front and back panel were not layed out in an easy to use manner. The voltage meter was on the back side? IIRC, There may have been changes to it since then, but best to take a look for yourself. Also, I recall it not being able to handle larger systems by itself.
I really think that AC problems are as unique and common as the AC public AC system feeding them. True they have to live up to standards, yet environment age of public system and it's condition go along with possible problems unique to your experience.
MC still has a good point about the phono pre being suspect here. My thinking here is that there is something amiss INSIDE your system, and not coming from the AC feed itself. That fun experimentation that we all abhor is inevitable. Best of luck sir.
As I recall, the Decware unit had some design aspects to it that I did not appreciate, though I have never owned one. Just to say that the front and back panel were not layed out in an easy to use manner. The voltage meter was on the back side? IIRC, There may have been changes to it since then, but best to take a look for yourself. Also, I recall it not being able to handle larger systems by itself.
I really think that AC problems are as unique and common as the AC public AC system feeding them. True they have to live up to standards, yet environment age of public system and it's condition go along with possible problems unique to your experience.
MC still has a good point about the phono pre being suspect here. My thinking here is that there is something amiss INSIDE your system, and not coming from the AC feed itself. That fun experimentation that we all abhor is inevitable. Best of luck sir.