If anyone is interested in Native DSD playback there is an updated sb audio drivers for USBridge dated 7th feb 2018.
The following native DSD support added:
QUAD Artera
Pro-Ject Pre Box S2 Digital
Matrix Audio Quattro II
Topping D30 (XMOS)
WaveIO USB Audio 2.0
Soekris dac1101
Engineered Electronics Stereo
You can download and test from here: https://github.com/sparky-sbc/sparky-test/tree/master/pro-ject-s2