DTS-HD Master Audio is a high-definition audio codec developed by DTS, Inc. It is designed to deliver lossless audio quality, meaning that the sound is reproduced exactly as it was recorded, without any compression artifacts. This technology is commonly used in Blu-ray discs and streaming services to enhance the listening experience for movies and music. The format supports multi-channel audio, allowing for immersive sound experiences in home theaters. It can handle up to 7.1 channels of audio, providing a surround sound experience that makes use of multiple speakers. This makes it popular among audiophiles and movie enthusiasts who seek high-quality sound.