VR-3EX: HDMI Accepted Resolutions
The VR-3EX HDMI Input Channel # 4 will support the following High Definition resolutions:
480/59.94i, 480/59.94p, 720/59.94p, 1080/59.94i, 1080/59.94p (when set to NTSC)
576/50i, 576/50p, 720/50p, 1080/50i, 1080/50p (when set to PAL)
The VR-3EX HDMI Inputs Channels 1-3 will accept the following Stand Definition resolutions:
480/59.94p (when set to NTSC)
576/50p (when set to PAL)
If you are looking to work with full High Definition signals and mix audio in and out please consider the Roland VR-4HD or VR-50HD