C19 Tube Question

I was given a quad set of sovtek 12ax7lps matched tubes from a friend that is really a tube nut. Where he got the damm things I don't know. He wanted me to try them in my c19. The question is will they work? I don't think these are interchangable with the current tubes. any comments would be helpfull because I don't want to pull my rig apart only to find out they won't work.. Thanks
Ray

I'm not sure....Zoothorn?????

NO!Not interchangeable.If you want to try different tubes try some Bugle Boy 6dj8/ecc88's,or any vintage 6922 tube.B.B.'s sound darn good in my c19

Those will not work. If you want to replace use 6DJ8/6922.

nope-- different tubes all together-- find you some Amperex 6DJ8/6922 tubes if you like a warm,bloomy midrange.

+1 on the Amperex E88CC/6DJ8/6922/7308. The U.S. Amperex 6922 gold pin white labels are very nice!

hello. i have several disc players that use those. i would be willing to take a listen to them.