Another new DAC: Audio Mirror

" It looks like the tubes don't have pins in the glass, just the bare wire sticking out, and need to be soldered to an adapter."

When the 5977 tube needs changing does AM provide the tube/adapter , and/or is there an upfront option to buy a backup tube/adapter? 

Vlad has, builds sets of the 5977 tubes to just plug-in for replacement if needed. I actually asked him to send me a pair so I could experiment with other gear that uses 6922’s because of how terrific these mini tubes perform in the DAC.

Thanks teajay

Thank you teajay. I did buy a backup set of tubes that were already soldered to an adapter. 

I bought some 5977 tubes on Ebay even before I received my dac. I didn’t realizing what I was getting into with the bare tubes.

I was really interested in this Dac until I read somewhere that the tubes don’t last long, I planned to use the Dac with my tv as well as my Roon setup.
How many hours of tube life can one expect from this Dac? Even if I was not using it with my tv, I still listen for many hours at a time, often music is playing all weekend and week nights.