Strange behaviour with sound output using UR242- Weird issue!

Hi all,

I am new in this forum. I am having a very strange issue with my UR242. I am using OS X Sierra. I am having the Audio Interface connected to my macbook and using two Monitors to do some mixing at home. But I am also using it sometimes without any DAW, just to playback the Audio when p.ex. editing movies, etc. The problem I am having now is that after reinstalling the driver, I am suddenly having a reverby, far away sound coming out of my speakers, which has nothing to do with my actual audio. I already changed usb cables, uninstalled all the Steinberg Software and reinstalled the driver, but I can’t get it to work. I am also not using any software from Steinberg, I just want to use it currently to playback my audio from my macbook. Does anybody here having a clue what the problem could be?

Any ideas are much appreciated!