Wolfson DAC confirmed by Supercurio
Wolfson Micro WM1811
100dB SNR Class W Heapdhone amp output, ReTune DSP, 3x digital interface.
Like WM8994 in Galaxy S / Nexus S, except:
1x stereo DAC instead of 2x.
2x 2W Speaker amp instead of 2x 1W
Smaller and probably cheaper, same sound quality expected.
Audio driver configuration & policy implementation based on TinyUCM (/etc/tinyucm.conf)
Probable subset of TinyHAL implementing codec configuration in config files instead of having everything hardcoded in ROM or kernel driver at compile time.
Native sampling rate: 44100 Hz. It means music played will be sent as-is to the DAC instead of being processed by a software up-sampling routine as it is on Galaxy Nexus or other devices with codecs accepting only 48000 Hz.
Blogs: androidnz.net, blog.clove.co.uk