I second the iPhone idea. It's been my DAC of necessity for a very long time. I'd love to see how it absolves, objectively.Any news on the bluesound node 2i / sonos DDFA amp front?
PS: I didn't check, but have you actually measured an iPhone?
One with a 3.5mm jack and one with a lightning to 3.5mm adapter?
It must be the most used DAC/amp in the world ...
aR