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Changing Preamp tubes on a Cronus Magnum?

In an earlier thread, I mentioned getting my Cronus Magnum on Friday. The amp was well broken in when I got it and I have put at least 24 hours on it since receiving it Friday morning.

I want to ripen the midbass/lower midrange a bit and from what I understand, it's the center 12au7 tube that makes the most difference. What would be a quiet tube that will ripen the sound a bit? Thank you.
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Showing 1 response by sebastienl

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sebastienl
84 posts
 
Hi stereo5,

I agree with adam18 regarding a n.o.s. 5814. On my side I had a GE 5-stars, triple mica from de 1960's. Make sure that both triodes of the tube you'll use are perfectly balanced.

In the time I had my Cronus, I exchange some email with Rogue's owner Mark O'Brien and he always had good suggestions for tubes in this amplifier.

Sébastien
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