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.
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.