"Shhhh! I'm Listening to Reason!" said:

I'm in the process of designing a pair of monoblocks based on the
Marantz Model 9. Any recommendations on 6DJ8/6922/7308s?


Microphonics are your worst enemy in tube phono stages.
IMO NOS Telefunken are hard to beat.
Philips E88CC is next best, but test them thoroughly for microphonics.
As with all NOS tubes, expect that the best tubes are already pulled
from the stash.........

Current production JJ Tesla is usually good wrt. microphonics.

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"Audio as a serious hobby is going down the tubes."
- Howard Ferstler, 25/4/2005