2. amps-preamps
  3. 165200-1660

KT 170

I haven't tried the KT 150's yet, now this-
https://www.vivatubes.com/copy-of-new-tung-sol-kt150-vacuum-tube/
" With the success of the KT120 and KT150 they dialed things up yet again with the KT170 which has a plate dissipation of a whopping 85 watts! A pair of these badboys can put out 300 watts." That's a lot of juice!


Price isn't too shocking, comparing it to the KT 150.

PL owners, Buy them and report back. 
tablejockey
tablejockey OP
3,799 posts
 
"I've had them for about 400 hours now in a primaluna evo 300 power amp."

Interesting news stickmon. According to johnss, he contacted PL and told they wont fit.

This has my buy now finger twitching.
stickmon42
5 posts
 
They hit the xformers on any PL that uses 8 output tubes.

I contacted upscale audio a couple months ago about them: "We’re testing, buy kt-150’s". Screw that, you advertise as "future tube proof" so we’re gonna test. They are :)

EDIT: total cost for the 170's from viva tubes was 20 bucks less than 150's from upscale. Sure, it isn't much but thats 2 good grams of (legal) weed here.
tablejockey OP
3,799 posts
 
"They hit the xformers on any PL that uses 8 output tubes."

stickmon42-
Is that what Upscale told you? Tubes contacting  the Xformer case seems like a concern. I have the HP=8 


stickmon42
5 posts
 
That's from the Facebook PL group, think someone measured and verified with upscale but it wasn't me. I have no way of actually verifying if it's true or not but it would be a major concern. 

All I can say for certain is that they work extremely well in an evo 300 power amp. 
Post removed 
More to discover