Has anyone tried the Buf / Schiit Audio? Esp. interested in hearinga Purifii Amp.

I was interested in this Schiit device for similar reasons - potentially adding some welcome warmth to a slightly clinical but otherwise really enjoyable setup. But I came to the same conclusion as @goodlistening64 as far as cable complexity and tube upgrades. So I never went through with it. Could still be worth a try in the right setup though.

I haven't received the Amp yet, Friday, 6/5. 
I purchased a pair of XLR- RCA  cables for $30; and as far as the tube goes; I have a bunch of tubes here...and if none sound good, I'll ship back the Buf. Yes, it's a gadget, but that's why I'm asking; some gizmo's are useful.