Millett Hybrid tubes?

[fante7]

I just read Pete Millett's article, and apparently I can use the 12AJ6, 12EL6, and 12FT6 tubes in my Millett Hybrid. I don't believe I have heard anything about these tubes on head-fi. Does anybody have experience with these tubes? Could I just plug them in without adjusting the "bias" or anything? The amp currently works fine with the 12AE6A and 12FK6 tubes I've tried.

 

[meat01]

You will probably get more information on this in the DIY section of this forum. I believe there are some bias settings in the millet hybrid construction thread and some tests between the different tubes.