Streaming BubbleUpnp to Phantom Gold...

[Rudolph]

Sounds like Bubble is using a lossy stream. I do not think Wasapi is involved in DLNA streaming from Windows, but I might be wrong of course. If Phantoms turn up as devices directly in Windows it is probably DLNA, and, as such Bubble should do the same. Following that, the sound should also be about the same unless Bubble uses some kind of lossy stream. Bluetooth maybe...?

Windows Media Player 12 is using WASAPI when streaming - sounds great.
The sounds from Bubble is a more heavy bass. The bass can be reduced from Spark using night mode setting.