First thing I noticed is that dynamics were pretty much EXACTLY the same. The old setup with the iPhono 3 seemed darker and little less detailed, but the experience was more-or-less similar. So basically....did I get savagely RIPPED OFF?I don't think so. Dynamics come from the recording, not the equipment. But its worthy of note that most audiophiles are referring to distortion when they use the word 'dynamics' since higher ordered harmonics are used by the ear to sense sound pressure.
IME the mark of a good system is one that does not sound loud even when it is. It just sounds natural.