This is the most world expansive CD ~ $98700Yen, around US$863 and in HK$6500!!! Japanese Brand – Fine N&F. Ya, I’m not talking about CD PLAYER, but just a Compact Disc – CD. It is made by Extreme Hard Glass. It’s not plastic but real glass.

I have studied all of those reflectivity of glass and digital media data record and playback many years ago. But it’s hardly understanding that since digital audio era, those readings are purely in digital binary code “01101101100”. There are many advanced technologies to resolve the jitter for real time purposes.

This Extreme Hard Glass CD provides a 87 pages booklet and a normal CD for people to compare and reference. From reviews, it says the quality even surpass SACD. I do like the plexiglas cases with that magnet cover.

More info from here:
N&F (Japan)
U-audio (Taiwan)