Martin.

The problem is getting a Thorens deck to have the precision and dynamics of CD as much as a better CD player. I bought the Gyro because at the time was the only deck I heard that combined the attributes of CD with the better resolution and musicality of vinyl. In comparison to modern designs the Thorens/SME III tends to be relatively warm and muddy though pleasing to listen to (I used to own a 160s).

I don't think adding valves is necessarily the answer to improved CD reproduction. There are plenty quality used CD players on the market that should improve matters such as TEAC VRDS or Sony. CD will always sound relatively flat but frankly the mastering of the CD will make the biggest difference. It is surprising how good a well mastered 16/44 source can sound. Unfortunately mastering quality on most CDs is poor and doesn't produce sound that approaches the format's potential.

My recommendation would be to improve both front ends if you want SQ to converge. Sounds like you have vinyl and CD at both extremes of desirability. Muddy v thin/bright.

Paul.