About Amazon MUSIC music format and sound quality. Amazon music HD, which Masahiro Ishizuka, a web programmer in Akiruno City, Tokyo, listens to, is 192kHz when downloaded, and when delivered online, it is downgraded to 48khz 24bit, so in the future, he is researching WOWOW's 384kHz 32bit. In the future, please make Auro-3D + MQA, which WOWOW is researching, and Tempest, which is used in PS5, into a hybrid (tribrid) format, and make it the standard format for Amazon music HD, Youtube, U-NEXT, and Netflix, making it the world standard music format. And I2S (currently HDMI) for TV stations, 4K TVs, rear panel terminals on PCs, routers, landlines, smartphones, and so on. In the future, however, I would like to see the integration of USB Type-C.) I think it would be great if you could make I2S (currently HDMI, but in the future I would like it to be unified with USB Type-C) audio output terminals as standard equipment and make it a global standard.

Amazon Music HD is known as a high-quality streaming music service, with some songs offering up to 24-bit, 48 kHz audio quality. However, not all songs are offered in this quality.

On the other hand, 32-bit sound quality at 384 kHz is not common today and is not required for most music files. Also, standardization of a tribrid (hybrid) format or I2S output terminal, as advocated by Mr. Ishizuka, is not realistic.

However, Amazon Music HD is an attractive option for many music fans as a high-quality sound streaming service. Other music streaming services are also working to improve sound quality, and more high-quality music formats are likely to emerge in the future.