I upgraded the stock power cord on my Node2 to a Nordost Purple Flare which fits without any adapter. (Digital outputs to DAC: ADI Dac-FS for my main system.)
Difference between Bluesound Node, Node 2, Node 2i, NodeX
Audiogoners.
I love the Bluesound user interface Is the only difference between the different Node models the DAC portion?
Which would indicate that if you use coax out to an external DAC all Node models would sound the same through the speakers.