Input from the radio left and right, output to the speakers high and low outputs, it filters the right frequency's to the speakers, high and low, so you would have 4 speakers. As it only is a 2 channel it's no good for my system but it may be of use to someone.
So Do you want it Mike, I have a pr of cossi calipers and a spare wheel for you, have a raffel prize to get to SCH, so who takes the prize may have room for the other items.