Thanks guys and apologies for the delay in replying. I suspected that my G91 was only outputting higher than 576p if I used HDMI.

Strangely though when I do use HDMI the screen goes completely blank when I play a DVD with the scaler set to output any more than 576p so it doesn't seem to work over HDMI either! The screen does say that it's receiving a 1080p signal but then it goes black, same for 720p.

I got an HDCP error2 when I plugged in the G91 (on the front display of the G91) and then the error stopped happening. I've since given up on trying to use the G91 over HDMI as it doesn't appear to work very well.

Has anyone else had similar experiences?

Rega P8, Rega Apheta 3, Gold Note PH-10 and PSU-10, Meridian G68ADV, Meridian 218, Moon 340i X, Dynaudio Special Forty, REL T7/x