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Has anyone had problems running kt-120s tubes in there power amp?

Hi everyone I have bought a set of kt-120's for my cary audio CAD 120s power amp and checked with the manufacture. But some audio research people have told me of problems after running them in there older amps, like the vs115. After they where told they can run them in there amp. So I put my stock kt-88s back in. Has anyone had issues with these kt-120 tubes? especially in the Cad-120s?


128x128jakecanada
facten
2,881 posts
 
Two different amps and apparently your manufacturer told you you can use them. Did you try them or simply put them aside because they don't work in AR amps?
stereo5's avatar
stereo5
6,405 posts
 

Since you aren't running an ARC amp, I really don't see what your concern is.   Obviously the transformers in those particular ARC amps couldn't handle the KT-120 tubes.  Cary already told you the tubes will work fine in your amp, so what is the problem?  The KT-120 tube is like a KT88 on steroids.  Everything is better about them.  You are really missing out by not using them.

FYI, the newer ARC amps work fine with the KT-120 tubes now.

rluthy57
35 posts
 
Hello again, I just answered you on the Marantz SA-11S3. I've been using the KT-120 tubes (12) in my older Rogue Zuess amp with great results. Tremendous increase in blissful easy power. Night and day difference to the KT-88 tubes.
wolf_garcia
6,708 posts
 
I don’t recall anyone with ARC amps having actual issues with 120s, or at least issues that were reported here, although there was a lot of speculation and trepidation. I began a thoroughly scientific and utterly informal and perhaps meaningless survey that determined that nobody reported actual transformer issues from 120s. I ran 120s in my Jolida 502P for a couple of years and they worked perfectly until simply wearing out…150s seemed a little much for the amp but 120s…no problemo. I use Gold Lion KT 88s now because I like them…they’re pretty...
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