Tubes for Audio Logic 34 DAC

The DAC has 2- 6922 or 6DJ8s and 2- ECC82 or 12AU7 or 5814s. Anyone care to tell me what tubes to look for or have tried the different tubes in this DAC?

Thanks and Happy Listening
I have the 24mxl that uses 2 tubes. I found the Siemens 7308 gold pins a big improvement over the stock tubes.

What are you using for a transport? How do you like the Audio Logic so far?
CEC TL-2X Transport. The AA was too much right now. I have heard the 24mxl in my system but did not directly compare it to the 34.
The CEC is supposed to be excellent. Jerry Ozment uses one. I meant how do you like the 34 so far? I really like the Ridge St. dig. cable that Deano and Lak recommended. What are you using?
I just hooked it up so it has not even been on a hour. I was going to play with some tubes that I have to see what happens to the sound first. It sounds very smooth and real to me which is just what I was looking for. I have a Kimber Orchird and was looking to try the AZ MC2 and either RS or Argent cables if I can find a good deal on one.
I found power cords to make quite a difference on my 24mxl.

Ridge St. had a 30 percent off special. It may still be going. I found it took less than a week for the cable to settle in. Rick offers a 30 day trial period. So, you should have 3 weeks for evaluation if you choose to try it.