Simply on the first impressions I have with my favorite reference DVDs (Star Wars Episode I - chapter 20, Saving Private Ryan - chapter 2, The Matrix - chapter 3) I have to say that I feel a more immersive sound field from the 3803 (which replaced my 3802). Don't get me wrong, the 3802 was a fantastic piece, and I have not done enough listening to make a fair comparison (especially since the 3803 isn't broken in yet). But, subjectively out of the box with minor tweaking (levels, speaker distance, etc), the 3803 seems to be an improvement.