Mullard NOS

Can someone please tell me the difference between the Mullard 12AU7 vs. the 12AY7. Thanks

nickt09-12-2000 5:32pm

pls1 Details Discussions Posts This discussion Message User 432 posts 09-13-2000 at 09:04pm Copy Comment URL Report Comment Edit Delete see this link for descriptions http://www.vacuumtube.com/FAQ.htm