according to the post, yesAnd those capacitors would be eliminated in the simple/cheaper/easier solution...?Well much of how the Pandora sounds is how the audio circuitry is designed... the expensive tantalum capacitors hns mentioned most likely has more of an impact than the DAC did to the Pandora sound.Please don't underestimate the importance of having rock solid audio and amplification on the Pyra. The Pandora blows away every cell phone and portable media player I've ever tried. It would be disappointing if the audio quality (and quantity) in the Pyra were to be in any way a step backwards from the Pandora.So the pcm1773 might go away if it is not significantly better. The twl6040 will remain there anyways since it is the only chip which has an ADC for the microphone.
Something else you might want to know: the twl6040 is supported by Linux 4.0 out of the box while there is no driver for the pcm1773.