Best tube dac available?

Typo, I meant Sksos1.

Besides the Bricasti is a SS Dac and the OP is asking about TUBE Dacs.

Like me, he may want to pair a tube Dac with SS amplification, to get the blend he likes.

wisnon ~ Yes I understood what the OP was asking but since I had some experience with a tubed DAC (and also an AYON tubed dac) I just threw in my 2 cents worth. And while the BIG6 was wonderful I'm sure the more expensive Lampi's sound better, they should but I never heard one myself so can't comment. Also the OP didn't ask about tube size so the age old question remains....does size matter!

Skos,

Yes, size always matters. LoL

+1 more for the Modwright Elyse

I swapped the stock tubes out for Telefunken e88cc's and the Phillips 5r4gys rectifier for a very sweet sound.

Great review on the Elyes here:

http://www.6moons.com/audioreviews2/modwright/1.html

I have been very impressed with the LampizatOr line. The Golden Gate is simply amazing!

I reviewed and own the LampizatOr Lite 7 DAC. You can read it here:

http://www.ayllonmedia.com/1/post/2015/06/the-lampizator-lite-7-dac-a-high-performance-machine-or-a-bloated-beetle.html