K4004B k4006 22518 No Sound

I have put my system together and everything seems to be working LD’s light up and no smoke or heat issues.
But when i plug on a source such as my iPod there is Nothing, even worse when i touch the 3,5 mm plug there is no plop or buzz either…

The setup is 2 x 4 ohm and 330mv input

I am relatively new in this field so…please help!