I have the same i2s dac but from eBay.(
http://www.ebay.com/itm/Audiophonics-DA ... 3f51d98ab0) It was working with a lot of clicks and breaks of silence sometimes.
Now I have the problem that after a week when I switch to Hifiberry DAC there is no sound anymore. When I switch to Hifiberry DAC+ I cannot choose in MPD the I2s. The raspberry analogue is running fine BTW. The config.txt (opened through WinSCP) does not show any configuration of the DAC;
# RuneAudio settings
cmdline=cmdline_linux-arch-rpi_3.12.26-1-ARCH.txt
kernel=linux-arch-rpi_3.12.26-1-ARCH.img
Checked all connections as they were working from DAC to Pi B+ GPIO;
5V to pin2
PWR GND to pin6 (gnd)
BCK to pin12
MCLK to pin34 (gnd)
LRCK to pin35
GND dac to pin39
DATA to pin40
HELP Please!! Did the DAC die on me, is this plain rubbish or is there a configuration issue?? (cheap dac became expensive dac?)