Why does my Indigo2 sound bassier/phatter than my Ti2?

[Barnelby]

I've been trying to investigate this for a while...

What I've been able to find in the research I have done (and please note I am no expert I am just repeating what I have heard)...The TI2 has different DACs than the previous models...

I remember reading that the DACs in the TI2 are higher quality and therefore more accurate... why that would cause the sound to be more punchy or fat in the older models is beyond me; I suppose that along with a clearer image of the sound more artifacts may be revealed that take it down a notch?

Yeah bring on some sound clips I'm dying to hear the difference...