@gavin1977 The Pink Faun USB Bridge is a good solution when streaming from a PC.
You know what, I am starting to think it is the USB that is complicating things. The USB was originally developed for computer communications and not for audio. They say if the USB is implemented well then it will work great. Yes, but from the reviews I read it seems no one is implementing it well enough thus the need for the Phoenix.
In my DAC both the USB and I2S support the same sampling rate:
USB / I2S : PCM up to 32bit 1536kHz, DSD up to DSD1024, DSD DoP up to DSD64
Perhaps it is time to try a digital interface that outputs I2S like the Singxer SU-6 or the AUDIO-GD DI-20 HE.
The Mano ULTRA mkII Music Streamer would have been great. It has two femto ultra low jitter clocks. I need to ask them about the I2S PCM sampling rate, because it seems to support 24bits only while my DAC supports 32bit PCM or is there something I am misunderstanding?
HDMI I2S LVDS = 44.1 Khz – 192 Khz | 16-24 bit – DSD64 (DoP)
A new question then, how good is sound over the I2S? :)