Cooky Jar is gone. Jim does not always have some nOS I want like Mullard 12AT7. I buy my 6922 and some others from Jim . I am not ever sure they sell 100 tubes a day. Hell most people buy tubes every two or three years when you have a stash. that is what I find myself doing. I have so many EL84 I wont need any for years. I also have 6922, and everything else my amps use in stash. I may pick up some more Mullard 7189 and EL84 but thats only because they are hard to find and Kevin has the EL84
I'm sure there's quite a few or so audiophiles out there with MB750s powering their big Sound Labs electrostats.