I talked to Bruce Wenger at BWS tubes and he was very friendly and helpful, we talked about 6922,6DJ8,and 7308 tubes. i told him that he came highly recomended to me by audiojerry and based on our conversation i decided to buy a Quad of matched and balanced Amperex 7308s. he also does mods to tube preamps and i am also thinking about doing some mods using paper and oil capacitors to my Anthem Pre1 L as well.thanks....WCW III