This looks very interesting. Done properly this would be a great addition to the Pi tool kit. Audio DACS are sometimes tricky, almost every good parameter comes at the expense of some other aspect lacking.
Based on a quick glance at the PCM5102a datasheet, this looks like a pretty sweet choice. While the chip is capable of 32bit/384kHz audio the Pi 2 Model B is a limiting factor. Apparently it tops out at 24bit/192kHz playback rate. Not too shabby.
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