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
j-wall's avatar
j-wall
372 posts
 
I'm highly interested in the 170's for my PL Evo400. Please give us some feedback as soon as these are purchased. 

@tablejockey Upscale doesn't even have them listed for sale yet, which to me seems odd
tablejockey OP
3,921 posts
 
"Upscale doesn't even have them listed for sale yet, which to me seems odd"

Maybe they haven't got the official "okay" from PL to say it's okay to use on "x" models, along with field history being a new tube?

Call them to get an answer.
rich121's avatar
Ag insider logo xs@2x
rich121
187 posts
 
Any updates?
I have a pair of newer Quicksilver V4 monos designed for the KT150 and need data sheets on these to see if I can use them
johnss
577 posts
 
Before you order a set, just be ware the KT-170 bottles are physically too big to fit in any PL amps, and many others. The amp will need to have especially wide socket spacing to allow the 170s to fit. 
tablejockey OP
3,921 posts
 
johnss-
I imagine PL wouldn’t post this if that were the case
https://primalunablog.com/2020/10/30/tung-sol-kt170/

The KT170 will fit based on dimensions comparing KT 150
http://tungsol.com/tungsol/specs/kt150-tung-sol.pdf#:~:text=KT150,5.57%22%20%28141.5mm%29

https://vacuumtubevalues.com/wp-content/uploads/2021/04/KT170-datasheet.pdf

Pic of KT150 in PL
http://www.tonepublications.com/review/kt150s-for-primalunas-dialogue-hp-integratehttp://tungsol.com/tungsol/specs/kt150-tung-sol.pdf#:~:text=KT150,5.57%22%20%28141.5mm%29

4.5mm on each side(9mm difference) looks like it will be a tight fit, but I looked on my amp, and the front/rear tube spacing looks to be the concern. A call to PL to confirm is in order.
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