Jolida Foz SS-X Tube buffer & soundstage expander?

Anyone have any hands-on experience with the Jolida Foz SS-X Tube buffer & soundstage expander?
I've read a few reviews but I want to hear from members of this website that have actually used it.
Your positive and/or negative comments would be appreciated.
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Newbee, is your SS-X unit broken in?

You are probably paying attention to quality cabling and vibration control?
I have found this unit to respond well to anti-static liquid
and treatment with a Walker Talisman...

Have you ecxperimented with minor changes to speaker placement
now that you have a new variable in your system?

Will you consider upgrading the fuse?

Far too soon to do or even think about any of that stuff - unit is not fully broken in nor is my understanding of its sound and use. I'm just having fun tinkering with it.
I find the 20hz bass boost to be helpful and the image widening to be great for me, as in my office setup the speakers need to be a little closer together than would be optimal. One minor issue is that with my 91db-efficient speakers, I do hear an audible pop when switching the unit off. I do not judge this to be bad enough to be worrisome but it is definitely there. Easily remedied by turning the power amp off first.