Going to give the Raytheon 2C52 a go with my Encore. Should have it on Saturday. Not really sure if I’ll like it more than the stock 12SL7 based on what I’ve read, but it was pretty cheap. I should get a few adapters sometime to increase the options. I’ve also been looking at these Tung Sol 12SL7GTs with black glass. Anyone have any personal experience with them? Wonder if they’d be worth the money. Edit: also picked up a RCA JAN 12SL7GT from 1949. Tube rolling is dangerous. I ordered a 2nd set of tubes when I got my Encore from Justin and just finally opened the second set of tubes. Hytron 1626 instead of Tung Sol. And National 12SL7 instead of a WU 12SL7. I'm not actually sure what WU stands for, but it's a neat logo.