Questions on KT150 tubes

Thanks. I have heard that the KT150 has a gentle midrange. From my research I won't go from an EL34 to a KT88 or KT120. They sound more technical is the word I get.

I'm so glad I got the PrimaLuna. As time goes on I'm more and more enamored. FYI most of the PrimaLuna owner's I interfaced with here and on other forums were not newbies. Almost all of the ones I spoke to directly had owned a lot of tube gear and finally found something satisfying and not difficult to live with.

So I might drop some coin on KT150's. My understanding is that in a PrimaLuna they might go 10 years because they are run so easy. We'll see. I like what I have now.

I appreciate your note!

Any followup on the KT 150s? I also have a Primaluna HP Integrated and am curious about this tube. I have the stock EL34s which are nice, but am thinking of venturing into a more powerful tube. I don't want to get too clean and want some body to the sound. Any first hand experience or tube comparisons?

KT150s are amazing sounding tubes, and after replacing my nearly 3 year old KT120s (they served with distinction as I work 'em fairly hard) about 12 months ago I have to say they don't make me want to ever use anything else in this amp (I have KT88s and 6550s that patiently stand by and also sound fine, but the 150s just work))…big sound, more effortless power (seemingly)…I bias at the amp's recommended 500mv point and they just stay there…large glass power pickles.

Ditto with what the "Wolfman" says. I have KT-150s in my ARC Ref 150 SE. When listening to music selections that I hadn't heard in a while (pre-KT-150), I am amazed by the difference.

Yes ... they are expensive, but ARC tells me that the KT-150s should last 50% longer than the KT-120s (3000+ hours as compared to 2000 hours).

What sonic differences do you hear in the KT-150s compared to the KT-120s? I have been running KT-120s in my Emotive Audio amps for a couple years but no tubes last for ever. When replacement time rolls around, I am wondering what to expect if I get 150s instead.