I have a Kenwood 1100U, but that don't matter. I kept getting a hum noise on the anode of the 6AN8, more on one channel than the other. I ripped out the 6AN8, put in Shannon's ST35 front end with a 12AX7(6N2P) in one 6AN8 socket, and a 6CG7 on the other socket. Now I'm getting just slight noise in one channel, and a nasty signal on the other. I removed the 6CG7 and it got a little bigger. I grounded the grid with a short wire soldered to it, and it didn't change. I removed the 6N2P and both cleaned up, but still had the noise from B+, a little less than the first picture.
Both pictures are at 10mv.
Pin 1 - 117
Pin 2 - 0
Pin 3 - 1.113
Pin 6 - 121
Pin 7 - 0
Pin 8 - 1.08
]
[URL=http://s19.photobucket.com/user/DeathRex/media/Img_2165_zps809dccb0.jpg.html][/URL