This is a CD. Under normal circumstances, there must be a round yellow mark on the cover of Jingru. The logo of Rolling Stone Records is written on the top, with eight words. "Introduction to the original licensed CD" is not in a row, but on it.

Write the original introduction. Except Rolling Stone's, Jingru's CDs are pirated, and there are few DVDs on the market. . .

Jay's is the same as Jingru's, but the record company is different and the logo is different.

HDCD is only produced by pirates because it is rare in the market! ! ! And what is even more hateful is that the quality is seriously unqualified.

Introduction: In order to improve the defects of the existing CD recording format, make it highly compatible, and make a breakthrough in sound quality, Pacific Micro Sound Company of the United States has introduced a new technology for recording and playing HDCD with patent protection. Its full English name is High Definition Compatible Digital, which is translated into a high-resolution CD. HDCD-encoded optical discs have high compatibility with ordinary optical discs. When it is played on an ordinary CD player, the advantages of HDCD coding and recording technology can be reflected. If you play it on a CD player with HDCD decoding function, you can fully appreciate the unique charm of all published HDCD information: the sound quality is clear and delicate, the dynamic range is wide, the signal-to-noise ratio is extremely high, and the timbre is more natural and realistic.

But, but, but: there is no genuine product on the market, or it is rare. If you buy it, it is recommended not to buy it online: it is all fake and the quality problem is serious. . . . .