I do own a JD9 II and I also recommend using old stock Telefunken 12AX7's. I know they are spendy, however my unit has not sounded better with any others.
"how do you set the gain on 2?"
I don't understand your question. Here is a chart that I used to set mine.
http://www.audiokarma.org/forums/index.php?attachments/jd9-jpeg.249933/
"how do you set the gain on 2?"
I don't understand your question. Here is a chart that I used to set mine.
http://www.audiokarma.org/forums/index.php?attachments/jd9-jpeg.249933/