I only have a 520STFM, and the 1st I have ever used it was a few weeks ago. I built a custom monitor cable that lets it plug right into the DIN-6 (RGB) of my 1084S. I also used 150Ohm resistors on the RGB lines. The picture is incredible. I need to find a 19" RGB CRT though - the little 1084 is just too small.