I am not sure if this is the forum to write my inquiry.
I have a Yaqin SD-CD3 for about a month now. I have read about tube rolling.
What tube should I go to try this.
The manual is written in chinese, I think it comes with a 6N8P (2x) tubes installed in it.
It has 6SN7 / 6H8C / 6N8P written on the plate were the tube sits.
What tube will I need to get to try a tube rolling ?