Altec Lansing AHS-602I 3-D AUDIO AND GAMING (AHS-602I) Altec Lansing SRS 3-D Audio Gaming Headst AHS602i SRS 3-D Audio technology, an audio enhancement technology that provides a realistic and spacious listening experience through headphones This award-winning technology retrieves the spatial information from surround recordings and restores the original three dimensional sound field. Games and movies have never sounded better!