It seems there's feeding frenzy regarding the EE minimax.
It would also help to know how you are planning to connect it, and to what (computer/CD transport/SB Touch/etc).
Other tubed DACs: Audio Research DAC8, Wavelenght lineup, Accustic Arts Tube DAC II, Ayon, Aesthetix. Then there's the question of why they NEED to be tubed...
I hope this helps.