2. amps-preamps
  3. 131821-1005

Tube Rolling for Rogue Audio Cronus Magnum 2

What is everyone using for the preamp tube and also down the line. Looking for articulate bass extended highs and sweet mids. Stock jj's are OK but I think I can do better. 
soundwatts
soundwatts OP
186 posts
 
Thanks for the responses. I also heard that the cifte NOS 12au7 is very good. Has anyone heard these? 
bacobits1
49 posts
 
I am also running a Cronus Mag 2 with a Millard cv4003 and 2 Tele 12au7, also tried 3 Tele in all 3 positions but like the 4003 in the middle. Using KT 120s.
This is a very very nice integrated!!
scorpio1951
171 posts
 
I use Telefunkun 12au7 NOS. Pricey, but worth it
soundwatts OP
186 posts
 
So my neighbor lent me a 4003 mullard initial impressions are warmer bigger Soundstage. But seems like the top is more polite. Also noticed it's pretty noisy. Is it possible that it's past its lifetime?
twoleftears's avatar
twoleftears
1,457 posts
 

It may be aging, or it may not measure well.  Do you know any of history on it?  For $10 more, Upscale sells a specially tested one for CJ and Rogue preamps.

Also, has anybody tried using a Brimar instead of a Mullard on the pre-amp socket?  I keep hearing that they're pretty good, but the Mullard seems tried and tested.

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