If the visual jump is incremental in the later films, the audio jump is a revelation. The standard Blu-rays offered great 5.1 or 7.1 surround sound. The Harry Potter 4K Collection features Dolby Atmos.
What does that mean for your living room? In Atmos, sound is no longer confined to channels (left, right, center). It exists in a 3D space.
Warning: You need a Dolby Atmos compatible soundbar or AV receiver to access this track. If you play the disc on a standard 5.1 system, it will fold down gracefully, but you are missing the headline feature.
Recommendation: For most people, the Standard Complete Collection is the smart buy. You get the same discs as the expensive editions. If you are a collector, hunt for the Steelbooks for resale value and aesthetics.
When shopping, you will see different versions. Here is how to decide:
