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Anyone try KT150 in Primaluna Dialogue Premium HP

I love my HP. I've had it over a year and have rolled KT120 into it from the EL34. I like both sets. But the EL is more "liquid". The sound is awesome. With the KT120s I like the added power and punch. But it can be a bit fatiguing. It's the midrange glare that I notice most. So I wonder if anyone has rolled KT 150s into it. Does it keep most of the niceness of the EL 34s?  Do the 150s have less of that midrange glare?  

What at are your thoughts if you've tried this?  Maybe Kevin Deal has an opinion?  
soundermn

Showing 1 response by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
Do your homework, and make sure the tube 6.3v heater circuit can take the extra current, as the heater voltage can sag.

As the EL34 take 1.5A each and the KT150 can take 2A each.

So for 4 x EL34 = 6A which the Prima Luna can take.

But 4 x KT150 = 8A you need to confirm if it can take this without any 6.3v voltage sag.

Too much heater voltage sag "can" lead to cathode poisoning, from what I've been told.


Cheers George
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