first of all thanks to the whole community making all this possible - I am new to the HifiBerry universe am grateful for whtat I could read and understand thanks to all of you upfront my own journey.
I have a new RaspBerry 4B and a new DAC2HD. HifiBerryOS (https://www.hifiberry.com/images/hifiberryos-pi4.zip, Oct 27th 2020) with just the Pi 4B works like a charm.
As soon as I attach the DAC2HD the device goes into reboot loops. Eventually after some time it keeps online and works, but it appears to be a random success.
What can I do to track down the potential issue?