hard question...
if you will not record music/sound, go for the DAC.
the lynx its an amazing soundcard, best drivers, verry nice AD/DA, nice wordclock, i own the AES16, and RME hdsp too, nice DSP mixer, but the DAC its a DAC.
if the DAC usb drivers are not working ok,
most low quality soundcards can output s/pdif from the 1/8" trs, any hi quality DAC with s/pdif in and jitter removal will work, Great! no need for USB. just good cables.
if you will not record music/sound, go for the DAC.
the lynx its an amazing soundcard, best drivers, verry nice AD/DA, nice wordclock, i own the AES16, and RME hdsp too, nice DSP mixer, but the DAC its a DAC.
if the DAC usb drivers are not working ok,
most low quality soundcards can output s/pdif from the 1/8" trs, any hi quality DAC with s/pdif in and jitter removal will work, Great! no need for USB. just good cables.