Anyway to know this by manufacture date? My Spring is in a rack attached to a microrendu and SU-1.
If you have an su1 I would recommend to stick with that.
But only a rough estimate I can give you for dacs shipped around Chinese New Year started to get the xu208. But the easiest way is to plug in a usb cable to the dac and check the driver revision number as I stated. As this is the only way to confirm or be sure what you have.
But if one is using an su1 I personally recommend to use your su1. Yes, both have The xu208 chip. However, that means little since the implementations are very different from su1 and HoloAudio usb module. The fpga and firmware for su1 has an effect, the crystek clocks and if you have kte version there are all the mods along with many other things I could go into.
Or you can go to our website to see photos of instructions to open the dac and visually inspect the usb module to confirm which one you have.
Also we are releasing specific firmware updates for the spring xu208 module very soon along with a new driver coming very soon. I’m still working on the final testing and hope it to be ready in a few weeks. Stay tuned on our website.
The cyan dac has the updated firmware specifically for the cyan and drivers specifically for the cyan. Our firmware between each are same numbers however designed specifically for spring or specific for Cyan.