The success of HQCD are overwhelming. Now Memory Tech Corporation in Japan develops a completely new approach to the CD manufacturing process, acquiring new materials to reproduce audio with the highest possible fidelity.
The ultimate in quality – a level of quality that is certainly impossible to achieve with existing CD discs – can be reached through Ultimate HQCD (UHQCD). UHQCD which is made in Japan complies with the red book CD specification and is playable on existing Audio CD players.
Ultimate Sound Quality CD - https://www.thesoundoftape.com/collections/uhqcd
Features of UHQCD:
• Discs conform to the CD specification and are playable on existing Audio CD players.
• Newly developed disc manufacturing process masks the sound quality.
• Offers easy enjoyment of high-quality audio at a quality that is very close to that of Crystal Disc.
Difference between UHQCD and conventional CD
Conventional Audio CDs are produced using the technique of injection molding to form “pits” of data on polycarbonate material. Metal plate on which “pits” representing audio source data are formed is used as a die. This is called the “stamper.” Polycarbonate is melted at high temperature and poured into the die to duplicate the pit patterns on the stamper. This method is efficient in terms of mass production but it does not enable totally accurate or complete duplication of the pits on the stamper. As a melted plastic, polycarbonate is inevitably viscous, so it cannot penetrate completely into every land and groove of the tiny pits of the stamper.
In the new method, however, photopolymer instead of polycarbonate is used to replicate the pits of the stamper. Photopolymers in normal state are liquids, but one of their characteristic properties is that they harden when exposed to light of certain wavelengths. Taking advantage of this property, perfect replication of very finely detailed pits is now able to be achieved. Photopolymers in the liquid state are able to penetrate into the tiniest corners of pits on the stamper so that the pattern of the pits is reproduced to an extremely high level of accuracy. In addition, new materials such as high-transparency polycarbonate of the type used for LCD panels and a unique and expensive alloy of high-reflectivity as the reflective layer are applied. After all, audio with UHQCD technology can be successfully replicated and reproduced at a level that is impossible to achieve using conventional CD production technology.
UHQCD - Ultimate Hi Quality CD - Made in Japan
