I would try the DAC in the 2700 first before going off and shopping for a new DAC.
As far as a streamer, get one with a display you can see or make sure it has a phone app so you can see what's playing, control the stream, find your playlists, etc...
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Michael 4K QLED|Aerial Acoustics|McIntosh D100 - MC501 - MX151|Bluesound|Schiit|Wyrd4Sound
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