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New tubes in Rogue M-180 Monoblocks

I understand the M-180s now ship with the KT-120 power tubes, instead of the KT-80. You can also simply replace the KT-80 with the KT-120 if you already own these amps. I'm curious whether anyone has done it and what their impressions are as far as the difference in sound. Is the over $300 upgrade worth it?
actusreus
roscoeiii's avatar
roscoeiii
1,155 posts
 
From what I have read about KT-120s in Rogue amps, the KT120s seem to get pretty universal praise.

Note that some Rogue amps need some modification in order to run KT120s. Best to confirm that your Rogue can use these tubes.
mechans
3,048 posts
 
You mean the KT-88s or the KT-90. It might help some who want to weigh in the subject.
I too have read only good things about the TS KT-120s but I haven't heard them. There is a lot of praise for some output tubes I found I don't like the sonics of.
actusreus OP
733 posts
 
Indeed, I meant KT-90, not KT-80. Thanks for the correction, Mechans.

I understand the only "modification" necessary is swapping the top plate in the Cronus amp as the tube holes are not big enough to accommodate the KT-120. I'm not sure whether other Rogue integrated amps would work with this tube. However, the M-180 monoblocks already came with holes big enough so that it's as simple as swapping the tubes. No circuit modifications are needed.
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