Digione signature arrived today and first impressions are very impressive. Has two power inputs one dirty power and one clean power. Dirty power powers the rpi and clean power powers the isolated digione. I powered the clean power input using a 6v battery. Output is much cleaner than battery powered old digione, less haziness in sound and instruments sound more precise than before. Bass has increased and is very tight now, percussion instruments sound much better and overall instrument separation is much better. All in all looks like allo did it again. Highly recommended. A high quality product but still room for improvement is there, but it's getting near to perfection now..well done allo.