i have a neko dac hooked up to BHSE. I also have electrocompaniet ecd-2 which have USB input. I vastly preferred the neko thats why i go for converter. I tried nothing short of Meitner MA-1 DAC on my system and still it cannot compared to the Neko on my setup. It maybe not the last word in terms of resolution but the analog feelings simply not there with all the DAC I've tried. And Neko is launched during the time of USB dacs starts to pop up.
We are in the world of audiophile, sometimes convenience did not exist......Also CMIIW, USB implementation in audio still behind vs SPDIF, but thats another discussion again
Yes, and that's what I meant by obsolete, instead of buying a soundcard and using its SPDIF output you went with a USB/SPDIF converter instead, because your preferred DAC has no USB input. I'm sure there are USB DACs that would be far better than the Neko DAC in your system, especially considering the incredible amount of new DACs on the market lately, but I understand perfectly well why you would rather stick to what you think is more synergistic and buy a converter - it's what I did myself after all.