CONCLUSION

The Cirrus Logic audio board provides excellent sound quality and has a wide range of capabilities – if you can find out how to use them. The problem here is an inconsistent User Manual that omits a lot of important information. A lot better is needed, at least on the element14 website. 

   Instead you are requested to plough through a lot of forum posts to reach an understanding of basic issues, and solve the problems that are inevitable. This appeals to some, but not to most.

Our Raspberry Pi and its audio board – in essence – worked well. If you have the time, patience and interest to understand how to set it up and use it,  this is a superb little board at an amazingly low price. You will get great sound quality, if with some effort.

For more see...

http://www.element14.com/community/community/raspberry-pi/raspberry-pi-accessories/cirrus_logic_audio_card?