Dear Mr. Gabriel, thank you very much for your detailed answer. I got it, figure out the best Streamer-DAC incl Input combination and then just choose the Shunyata digital cable for that particular interface. In other words one could compare two settings with a standard cable where USB and S/PDIF are also “equivalent“ and buy the Shunyata afterwards, because it seems to be very hard to get both the USB and S/PDIF at the same time to demo here in Germany.
While I have the chance I like to thank you for the work, effort, science and dedication you put in to all of your products. The level of craftsmanship and search for that extra something just shines through. I was looking out to buy a power distributor and finally chose the Denali V2 which I now got for roughly a month and real love it!!!

The improvement it brings is very apparent and from what other companies charge for their offers, it‘s almost a bargain, if that is the right word.
Had a similar experience with the demo Alpha USB, but that was half a year ago and I‘m early awaiting to try the Sigma in comparison. So it‘s good to know that the S/PDIF is in the same category, if a potential streamer would need that connection.
Kind regards and keep on educating the Hi-Fi world with your wonderful products and insights, Mr. Gabriel!

Indeed much appreciated.