I picked up a Musical Fidelity X-10D tube buffer on eprey.
from what I have been able to uncover, it uses 2 6DJ8s.
Since I don't know what condition they tubes are in (especailly after being shipped)...
I figured I might pick up a new set.
I have a tube tester packed away at my parents house... somewhere.
I don't feel like looking for it at the moment.
I was looking at some NOS stuff and intrested in suggestions you guys might have.
maybe try a set of 7DJ8s for fun?