Blu-rays typically feature lossless audio like DTS-HD Master Audio. Smaller 800MB files usually downmix this to stereo or low-bitrate AAC, meaning you lose the immersive surround sound experience. Official Harry Potter Blu-ray Collections
If you are looking for information on where to find this specific collection, please be aware that I cannot provide links to copyrighted movie downloads or pirated content. However, the complete Harry Potter collection is available for legitimate streaming or purchase through official platforms: harry+potter+bluray+800mb+collections+all+parts18+bdrip
If you're looking for a complete collection of the Harry Potter movies on Blu-ray with a file size of around 800MB per part, it's likely that you're seeking a BDRip (Blu-ray Disc Rip) version. BDRips are high-quality rips from Blu-ray discs, offering excellent video and audio quality. Blu-rays typically feature lossless audio like DTS-HD Master