Yes you can, I made a small video with the X1850 mixer off and detached Ethernet from the Player:
The only bad thing is that I cannot select the DMX channels without SoundSwitch software. Don’t take me wrong, it’s a nice piece of hardware and I hoped to control my COB’s with it. All what it needs is something to select the DMX channels, it could be a small program or some subfolders in the very tiny oled display of the Control One. I think the Micro DMX Interface could drive one universe the same way.