I fired up the OTS today, first without and then with my new Fuchs Verbrator. I'm quite thrilled that it makes such a difference... the amp is so much smoother and balanced now, totally different than it used to be. Actually, it seems to be rather mid heavy without the Verbrator?!
+1 On the Verbrator, been using one for nearly a year now. Only one thing that I want to change and that is a master return level control from the Verbrator so that I can crank up the Master on the OTS to drive the Cathode Follower harder in the Fuchs....get a little compression going.