1. Yes, you can use I2S (and all of the other digital outs) to byspass the integrated DACCan you use the i2S output to connect to a DAC and bypass the on-board DAC? If so, will it connect to a PSAudio DirectStream? Also, it looks like there is no built-in support as an LMS endpoint, e.g., "SqueezeLite." Has anyone tested it as an LMS endpoint in DLNA mode?
2. I couldn't see the pinout for the I2S connector in the manual of the PS audio DAC, so I think you might need to ask them about it. Ours is described in the specification part: https://ifi-audio.com/products/neo-stream/
3. We do not provide that for this unit.