Many Thanks for your reply!
Just contacted the Orange Support, they told me that back then they used PM Valves,
It seems quite strange to me, I started to see Orange Amps equipped with PM valves around 2010, but anything is possible!

Hello Guys!
Just got an Orange AD-30 Single Channel
It came with JJs
I'd like to install the stock tubes, I saw that in early 2000s Orange uses Ei as EL84 power tubes and Sovtek GZ34,
Can Somebody help me to find which were the stock preamp tubes?

Many Thanks

Hi a.hun, Thanks for your reply! I have the stock tubes installed right now... I don't know which valves orange uses on the or50 Stock head but I really Love the sound! I was also looking for the svetlana winged c for the power valves The preamp and the power tubes are 5 years old.. I really love a ...

Hi!
I have to replace the Tubes on my Orange OR50H
What do you recommend?