I sold mine after 11 months. I simply didn’t hear or experience anything different with or without it. My ears, my system, of course.
As I mentioned in another thread, I could not hear a meaningful difference with it in the signal chain. I did use an aftermarket LPS also.
But, many people really like it so it definitely can work.
I am hearing a difference for the better with a Matrix into i2s.
Giving the etherRegen a shot was certainly worth a try. Easy to resell if it doesn’t work out.