Hi, I have just bought a 4K AV Amp, connected my PI (using the HDMI port next to the Power in) and I only get a max resolution of 1920 x 1080 option in the settings menu.
Also if I try and play a 4K file back it stays at 1080 (have set Adjust playback on Stop Start)
Plugged a 4K Fire stick into the amp and 4K appears on TV, so AV amp & TV are compatible.
Am I missing something?
Regards