I tried to find a quantitative comparison using The Google.
The best I could find is this comment by user pixelwitch in Oct 2015 at the HydrogenAudio Forum.
“I’ve read that the two devices are based upon the same platform internally, yet the Sport boasts a much higher battery life (25 hours vs 18 hours) and the Jam a “Deep, rich sound quality”, whatever that means. Does this mean that there is some additional DSP going on to make the the Jam sound “Deep[er]” and “rich[er]”? That could explain the decreased battery life and the implicit superiority of the Jam’s output.”
at this web-link:
