"Sander deWaal" wrote

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.

True, and there are helpful tube dampening mechanisms
to reduce microphonics.


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.........

I've used six different brands of 6922/6DJ8 low noise
variants in a ARC-LS2. The Sovtek was, for me, the
best sounding.


Current production JJ Tesla is usually good wrt.
microphonics.

Last year I switched out the Penta-China tubes
in my microphone preamp for highly sorted
RAM - Sovtek 12AX7 from:
http://www.tubeaudiostore.com.
Best Sovteck yet.