Originally Posted by caromire
Hello, I can rolling the 6N1 for the 12AT7?
Thanks
The 12AT7 has the same two pins for it's heaters as the 6N1, but it's designed to run off 12 volts instead of 6.3 volts like the 6N1. So in order to use a 12AT7 in the place of the 6N1 you'd have to change the heater supply wiring at the socket a bit. Since the 6N1 is just there to look pretty and is not even in the audio circuit I don't think it would be worth the effort to do the conversion though. Just stick with the cheapest 6N1 you can find for the window tube.