The E80CC is a strange story. First of all, it has a much higher gain in Mr Lee's DIY pre-amp. We need to set the volume backward 4-5 notch in order to get to the right sound level. The E80CC projects a
very "odd" sound stage which gives a "much larger than life" scale. I think all 3 of us do not like the sound of both E80CC even as they are very very hifi sounding in a way. The E80CC reminds me very much of the Mullard ECC32, which also sound extremely odd in some 6SN7 applications but marvelous on others. BTW, the Valvo pinched waist sounded alot better than the Tungsram E80CC.

I believe we need to test the E80CC again in an input or output buffer position with no/minumum gain before we can conclude how good it is as a 12AU7 "sub".