I received my Hilo and I ran it through the paces. I had some technical issues where the connection would drop between J River and the Hilo requiring a reboot and re-connect. I was up-sampling using DSP in J River. I also tried to send DSD over DoP and there were some strange digital artifacts that did not sound as good as the original source. Finally I set J River to send the signal with no change and the connection still dropped after some time. The USB cable I have is a Wywires USB Silver cable and it worked perfectly for two years with my prior DAC.
The Hilo is a technical marvel and sounds great when it is working; however, I am unwilling to invest time troubleshooting to make it work. I had my Furutech Esprit work flawlessly for two years without a single issue.
Soundpure, the company I purchased my Hilo from, is outstanding. I worked with Chuck Giardino and he was very helpful and patient. I would not hesitate to purchase products from them. Paul from Hilo Technical Support was also extremely helpful and will be there to support you if you purchase a Hilo.