Originally Posted by gactm
With respect to multiuser approach, after picking up the parcel I went to my office, unpacked the sound bar and I connected one USB port on my laptop to the USB port on the back of the YARRA 3DX by using the supplied USB cable. Together with some of my colleagues, we tested one, two and three listener modes, mainly for far-field setup. Pretty similar with your finding, switching to two or three listener modes altered the sound; it was less powerful and the immersive 3D surround effect was less noticed.
In the meantime I did some more experiments with the multi-listener mode and I have to say there is a huge difference between the near-field and the far-field mode. As I wrote in near-field mode the result is abysmal, the frequency response is weird and the sound stage collapses.
But in my setup in the living room it actually works pretty well! Here I use far-field. The room is rectangular with the TV in the center of one of the narrow sides, the sofa is located around 10ft away, with no wall behind it (so no early reflections). The money seat is of course straight in front of the TV, here I set the first listening spot.
On activating the second listener, the sound in center only changes a little bit. The seconds listener gets a sound image that is not as good as in the center, but still very good. At least as good as with any other sound bar.
So in my opinion multi-listener is usable, but only in far-field. Maybe this is also the main use-case, because for typical near-field (in front of computer) you don't really need it.
But there is one more thing! The sound beam positioning needs to be improved especially for far-field. Currently it only works in steps of around 20 degrees (when shifting the hear in the app I get 9 sound changes for the 180 degrees indicated). 20 degrees at a distance of 10ft are around 3-4ft. Too much! 3-4 ft is more than the width of a listening position (or sofa seat).