@gochurchgo
I got my hours wrong, the DS2 has only 15 to 20 hours on it. Don't know where the 50 came from, although Don told me it would take that long to break in.
It started out with a bit too much treble, but that went away pretty fast; and it is more detailed compared to the CJ 17LS2. Also, the DS2 soundstage is a bit taller and deeper.
My goal was to try 6SN7 tubes in a preamp, which are supposed to sound different than the 6992 tubes in the CJ. So far I am not able to comment on that. Again, early times with the DS2.
By the way, the comments about Don Sachs being good to work with are true. He is knowledgeable and will take the time to share and does not sugar coat things.
Thanks for listening,
Dsper