Some thoughts on continuing to use the Node 2i as your streaming platform. Starting with the Node N130 and through to the current models (Nano, Node, Icon) Bluesound starting using the ARM® Cortex™-A53 quad-core processor, which is used in many high end streamers. Adding a quality external power supply to any of these new generation units will get you embarrassingly close to the streaming performance of multi-thousand dollar streamers.
That said, the DAC in the Node 2i or any of the previous generation of Nodes is just not very good, and certainly not up to the ESS implementation in the newest generation, at least if my experience with the little Nano is any guide. If you like the Bluesound IOS and features, an upgrade path for you that makes sense might be something like this: 1) Node Icon - 2) Node Icon + external power supply - 3) Node Icon (used only as a streamer) + external power supply + excellent stand alone DAC to suit your tastes and budget.
Just a suggestion,
kn

