“The iOne is the DAC for the modern home. With Bluetooth, S/PDIF or USB inputs, it upgrades the listening experience with smartphones, tablets, computers, TVs, gaming consoles, media streamers and more. The nano iOne is a great piece of kit. It is simply incredibly versatile and offers cutting-edge technology.”
https://www.head-fi.org/showcase/ifi-audio-nano-ione.22332/reviews
Many thanks expatinjapan for your wicked review.