Cascode input 6DJ8

[talbany]

I've been looking into designing a cascode input stage using a 6DJ8's I pulled some old Telefunkins and Bugle Boy's (ECC88's) from some old Military test gear that test good!..Any ideas recommendations on how these perform?

Been looking at starting with either traditional or Moderate gain style..
https://taweber.powweb.com/store/cascode_schem.jpg

Thanks

Tony

[stephenl]

Some circuits I've tried with a 6SN7 fixed biased, self biased, and grid leak biased.

I liked the sound of the grid leak biased the best - chimey, very "wide bandwidth" open sound.

.68u bypass sounded best.