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Phono preamp tube rolling.

As upgrade rush bites again, planning to perform some tube rolling on my Rouge Ares Magnum. Please share some experience with tube rolling on pure tube circuit topology phono preamps. Practical experiences are preferred. Theoretical options are welcome too.
surfmuz
Post removed 
tomwh
150 posts
 
Surfmuz

Looking at the manual again it looks like the 12au7  position  is the position  which you  can  sub the tubes.  Which seems odd , but  you  tried it with  12ax7 and  know , 1st hand ,  it not for your system.

Enjoy the ride
Tom
surfmuz OP
406 posts
 
tomwh, it’s not odd to me…12AU7, 12AT7 and 12AX7 are pretty much the same tube with a little different gain settings. 
surfmuz OP
406 posts
 
@mijostynit 
is always best to use the specified tube.       
Could be exceptions, but I general you right…. I always return to specified tubes. 
surfmuz OP
406 posts
 
@mulveling 
thank you… it’s a quite impressive experience. What was following upgrade replacement for your Ares?
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