Lector 7T and tube rolling



I'v got this nice CD player, but would like to have even smoother highs. It has originally CVC Chelmer valves (12AT7) and I wonder if old Mullards, RCA, Siemens or other NOS would change this?
Is it important to have NOS from the 60's or is tubes from the 80's almost as good?

Thanks!
ole_s

Showing 1 response by starboard

In regards to my post to Ole, (which I thought was going to be an e-mail, I need to start following directions), After 100 hrs of fully powered up and about 50 hrs of playing cd's, the slight upper midrange edge is no longer there! I could not be happier with this player. Warm, musical and no digital glare at all. This player for the money, IMO, is a great value!
Blaine