Originally Posted by t-c
How exactly are you able to measure or compare the sound quality from DAC chips?
It's very easy actually. A quality soundcard like an M Audio 24192 has excellent converters and can easily measure most DACs. Software like ARTA, REW, RIghtmark etc make it easy for free. If I want higher resolution than this I can take it to work and measure there. However as I can get a 120dB range out of the 24192, this is far, far better than anyone can hear and where the measureable differences between even relatively modest DACs exist.
To compare whether there is actually a detectable sonic difference, you need to do it blind and level matched.