IMO, with the WA6 the GZ32 is thin sounding but very detailed, so I liked the 6SN7's with this rectifier tube…but I understand you don't want to use them in the 6-S/E just yet. If you e-mailed Jack about using them in the 6-S/E he is going to tell you what he told me. 1st e-mail- "the 6SN7's shouldn't be used with the 6-S/E" 2nd e-mail- " you would have to downgrade the 6-S/E to a 6 to use the 6SN7's" I believe it is Elmo, but don't quote me on that, who is using the 6SN7's with no issues in his 6-S/E…but I'm still a bit concerned about putting them in my 6-S/E being this is what Jack said after 2 e-mails asking him if I could use them, or if there is any way at all if I could use them with the 6-S/E, so I'm just going to forget about them and use my 6FD7's and 6EW7's, and order some 6DR7 tubes in the future. I would just feel better not using them, or even trying to use them. Please keep us posted on his response to your e-mail. Thanks. I had asked 2359glenn who makes "adapters" for the 596 tube, while he was on the forum last night just out of curiosity being he is a "Member of the Trade" if he had an opinion or any input on this, but he did not respond to my question. I'm just trying to see how many people have tried this and do use them in the 6-S/E without issue, thats all.