In conclusion, I’d say that if you’re looking for a truly portable unit, and don’t want to spend the cash on its bigger brother, but do want portability or an upgrade from a less expensive amp/DAC then this is an excellent choice. The obvious comparison is the Chord Mojo, which is nearly exactly the same size as this unit and does sound a bit nicer. It also costs several hundred dollars more. The only other portable amp/DAC that readers may be familiar with is the Centrance HiFi-M8, which costs significantly more than the ifi Nano iDSD Black Label.
Many thanks Grover Neville for your reviews