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Rogue Audio Cronus &/or Atlas owners ... TUBES ?

My Rogue Audio Cronus integrated amp is about to reach its third birthday, and I'm ready to replace the original Svetlana EL-34 output tubes. What are your experiences and thoughts ? Stay with EL-34's ?, try Gold Lion KT-77's ?, perhaps EH KT-90's ? See my sysytem for the rest of my stuff. I mostly listen to 1950's - 1960's small ensemble jazz (tons of Blue Note re-issues, etc.)
adam18
facten
931 posts
 
Catman you are correct the Magnum version supports use of the KT90s.

Adam what signal tubes are you using?
lamcam
76 posts
 
I am using EH KT90 on my Cronus Magnum.
adam18 OP
670 posts
 
Hey Facten..........
I replaced all the small tubes, with the guidance of Nick and Mark at Rogue Audio, as follows : an RCA 5814A in the center gain stage position, a pair of GE 5751 "Goldpins" in the 12AX7 slots, and a pair of GE 12AU7A's in the 12AU7 positions. All tubes are "NOS." This change in the five small tubes created a very beautiful improvement in the overall musical presentation of my system.
So, with all this in mind, and again with the guidance of Mark O'Brien, I'm seriously considering the Genalex Gold Lion KT-77's.
facten
931 posts
 
They shipped my Magum with Sylvanias which were very nice sounding, but Ididsome tube rolling afterwardsand have Tungsol 5751s and RFT 12au7s - , theSylvanias were not bright but these have a slightly warmer sound which I prefer
adam18 OP
670 posts
 
A follow-up........ I replaced the original Svetlana EL-34's with a brand new matched quad of Genelex Gold Lion KT-77's. Absolutely beautiful.....My system has never sounded better !
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