Buckingham: E80CC is not a direct replacement for 12AU7. They often come up on Ebay offered by sellers in Europe. I am looking into modifying a Pilot 232 power amp to run one in place of it's 12AU7, hoping that it will flesh out the tone a bit (make an EL84 amp sound more like an EL34 amp:-). The E80CC uses the same pin out (I think) and it is taller than a 12AU7.
