Highlights Apple has developed its own lossless audio compression technology called Apple Lossless Audio Codec (ALAC). In a new support document, the tech giant also revealed that Apple TV 4K will only support standard lossless audio at its launch. Most audio compression techniques lose some amount of data contained in the original source file. Apple is homecoming with its lossless audio technology to HomePod and HomePod Mini in a future software update. Apple has developed its own lossless audio compression technology called Apple Lossless Audio Codec (ALAC). In a new support document, the tech giant also revealed that Apple TV 4K will only support standard lossless audio at its launch.