Is it possible to hook up an external equalizer to a Denon AVR 1803? If it is then how do I go about doing it? I have an old ADC Sound Shaper 110 that I used to use with another receiver and have not used it in about 5 years. I hooked it up to the Denon and I got nothing. Am I not doing something right? Can someone please tell me how to make it work?

Any help at all will be greatly appreciated.

Micky