Testing the 5842/417a on Sencore MU150?

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I am about to enter the tube world! I just happened upon a lot of 4 new-looking, but untested 5842/417a tubes, which I intend to use in my first tube preamp project.

I asked a friend (who will be supervising the operation) to test them, but he doesn't have the proper settings for his Sencore MU150 for this tube.

If someone knows the settings, please reply. Thank you!
 
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