andNot in the original standard and rarely supported. And part of the reason is the pulse spreading in the plastic optics. Its also a very old standard and since it is almost exclusively used by TV manufacturers, the focus has not been on improving it for high end.Actually the optical/toslink issue, unlike many sonic preference sin audio, is not a matter of opinion. It does not support high res
all inputs on the DAC support 24/192. I don't know if the Node outputs 192 but that is not a Toslink limitation.
As to USB, the real issue here is not "what magic cable should i thrown money at?" but "how do i get good sound?" Which really begs a different solution.