I am trying to use the 3dio FS with an 8 channel Mackie mixer. I am using a stereo mini jack to 2 mono 1/4" jack splitter cable. When I plug these into the left/right on one channel of the mixer I get no signal. When I plug them into 2 channels I get a signal but stereo to both ears, no binaural effect. I also tried plugging the mono ends into a splitter to make it single stereo jack into the mixer, didn't work either.
I also tried it with a Behringer micro mixer using the adapter to make it a single 1/4" stereo input, this worked but it was very hard to tell if there was any binaural effect - it felt like maybe there was a little, but not as much as you would expect.
the battery is brand new.
let me know what you think!