1. HR:

HR is Hi-Res, the full name is High Resolution Audio, also known as high-resolution audio. Hi-Res Audio is proposed and defined by Sony and developed by JAS (Japan Audio Association) and CEA (Consumer Electronics Association) design standards for high-quality audio products.

Two: K2HD:

K2HD is gold 24BIT High Definition - the abbreviation of ultra-high resolution compatible digital gold disc. Carrying high-density digital information with a bandwidth of up to 100kHz and an analysis rate of up to 192KHz 24-bit.

Extended information:

In 2004, Japan's JVC Company began to test K2HD technology on the basis of HDCD. In 2007, this technology was quite mature, and the research and development results began to be used in disc making.

In March 2007, JVC invited Mr. Ma Jun, the founder of FIM Yizhongqingcheng Records, to JVC Tokyo headquarters to learn about the mixing production and effects of K2HD. Mr. Ma used the master tape of "River Water" and XRCD24 to create For reference, both of these are inferior to K2HD.

Therefore, he foresees that in the next few years, K2HD+Mastering will become the mainstream of audiophile discs. Therefore, a contract was immediately signed with JVC Company to manufacture 15 types of K2HD. In August 2007, the world's first love-at-first-listening K2HD was born.

In April 2008, 7 K2HD discs were released on FIM. In the years to come, more and more audiophiles will happily accept K2HD discs. K2HD, like XRCD, can be played on regular CDs.