Purifi 1ET7040SA Tube preamp

I did not need the external filter in combination with my smps and mu follower topology.
Just adjust C4 till you get a ampon delay of about 20sec.
The board can adapt all kinds of power supplies.
For the leds use 3v types, you can adjust brightness of the leds by changing R25

Do not forget to cut pin 18, 37, 43 on connector H2.
 
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Good day, Thank you again 👍I'm almost done with everything 😅
About the caps is there any advantage in taking them with higher voltage value than the minimum ones you advised ?
I don't find your messages where you told me which tubes to buy, there is a lot of 6n60 on Internet, with very various prices ...
Thank you for the reminder of the pins to cut 👍
 
Sound fantastic.
 

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