An oldie but a goodie. Been on my reserves bench since I bought a JKenny but time to let it go. Ideal way to keep using your favourite vintage DAC for streaming or computer digital.
Has a proper built in LPSU none of this walwart nonsense. Missing the little optical input flap. I think it's optional to run off USB power with the switch on the back - but don't quote me on that! Sorry I don't know the exact specs but it's suited me fine with high res listening on my Pi and Zen. Just tried with my Rpi4 running Volumio and it worked a treat.
Asking £40 collected from N London or plus delivery.