Happy was I that I received my vintage NOS RAYTHEON 6F8G for an upgrade project on my tube buffer w/c has Electro Harmonix 6SN7, the project went SOUR as the other Raytheon tube was a DuD
The 6F8G Raytheon Tubes looks nice but depressing when powered-ON
The YAQUIN CD3 Tube Buffer getting ready for the transformation
and finally installed the Vintage Tube but a big Let-Down
So maybe next time again...
Happy New Year Guys!