I received this little two tube preamp http://www.gikfun.com/electronic-diy-kits-c-7/6j1-tube-preamplifier-board-20-stereo-multiple-diy-kit-p-730.html
It comes with 9 470uF caps. The symbol on the board for them is a circle, with white strips across one of the legs. Does anyone know if that indicates the positive leg of the capacitor?
Also, I don't read Chinese characters. Which set of RCA plugs are the input? No word back from GikFun to these questions yet.
There is no schematic posted to work out the details myself.