Pacific Valve Dac 60...Tubes?


Recently found what I thought was a good deal on a dac 60 so I decided to give it a try with the duet as a source. Have only listened a short time(olympics have interferred)and so far am very happy.
This was a used unit and I have no idea of the condition of the tubes so am considering ordering a new pair. Would like to stay in the $100 range if possible. Any recomendations including source if possible appreciated.
Thanks
Steve
scoly1
I have the GR Research Modded Dac 60 and it is a fine unit with the right tubes. I had a huge stash of 6dj8 family tubes. As nearly always the Amperex are favorites.
Amperex Orange globes- best top to bottom
Amperex BB- little warmer and more plump bass
Siemens chrome plates- great all around/ detailed and expansive but thinner than the Amperex
JAN Phillips- best bang for the buck- highs not as sweet as Amperex
Mullard - Toe tapping fun, warmer and little looser bass- Musical less detailed
NOS Ei- very good top to bottom but slightly less textured midrange
Ediswan- good all around but less spectacular than Amperex, Seimens, Mullard
Stivervii
Thanks for the list. Just bought a pair of Amperex Orange Globe. Anxious for them to arrive.
Steve