If your amp is setup for single ended input. The important thing to remember is… do not use the – on the input for single ended. Connect the + to + and the negative to G (ground). If you connect to -, it will damage the amp. For balanced input, just remove J1 and J2 jumpers completely. J1 and J2 have jumpers on pins 2 and 3… this is for single ended input. If you change the jumpers to pins 1 and 2, it will reverse the polarity… most situations this will probably not sound as good, so no need to mess with that.
For the potentiometers included, the black wire goes to the center pin on the pot, and if holding the pot with pins facing up, the yellow wire goes on the left, and the red wire on the right.