Hello all, my first visit for a while.
Unfortunately I have had to sell my 90 20v quattro. I have replaced with an excellent 97 A4 1.9 TDI. It has a Delta head unit with no CD changer. I understand my options are limited in finding a compatible changer. I would like to replace with a Concert head unit as my wife has in her 98 A4. Is this possible? Is it possible to connect an aftermarket amp to the Concert?

Hope you can help, I am fed up with my cassettes!