I've got 3x 12AX7 tubes. They are marked dp, which means Tim de Paravacini and come out of my EAR 834P phono stage. What I could gather Tim de Paravacini used EU tubes. All are slightly used. Over time I accumelated too many tubes ad these are some that have to go. (need the cash)
These were meassured in a Shell Electronics Test-O-Matic tube tester
The tubes meassured:
100/100
100/100
99/96
Tube is $ 15 a piece plus shipping
