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Sega Mega-CD5555555
[[ja:&#12513;&#12460;CD]]
The '''Sega Mega-CD''' is an addon device for the [[Sega Megadrive]] released in [[Europe]] and [[Japan]]. (The [[North America|North American]] version is the [[Sega CD]]).

The device will allow the user to both play audio CDs and specially designed game CDs.  It also has [[CD plus G|CD+G]] capabilities. 

The development of the Sega CD was top secret; game programmers didn't know what they were designing for until the Sega CD was finally revealed at Tokyo Toy Show in Japan.  The Sega Mega-CD/Sega CD was desgned to be in competition with the [[Turbografx-16]], which had a CD module. he Sega Mega-CD was not meant to compete with the [[Super Famicom]], which was released in in Japan, nor did it compete with [[Super Nintendo Entertainment System]] in Europe.

The Sega Mega-CD was first released in Japan in 1991 for ¥49,800.  Initially, it was a great success because of the inherent advantages of CDs (high storage space and low media cost) and the fact that it had a nice RPG base.   The system sold 100,000 units in Japan. Cost issues prevented more units from being sold. Sega of Japan did not inform their North American division of their Mega-CD console until a few months later.

Europe had their Mega-CD expensively priced. It was released in Spring 1993 for £270. Only 4% of European Megadrive owners ended up having a Mega-CD because of its cost. The [[Megadrive]] was a very successful console in Europe. 60,000 of the 70,000 Mega-CD's shipped to Europe were sold by August 1993.

The [[Australia|Australians]] got their Mega-CD on April 19, 1993.

The Sega Mega-CD exists in the following models:
*Sega Mega-CD I (MSega CD I in JapanNorth America)
*Sega Mega-CD II (MSega CD II in JapanNorth America) had a faster CD-ROM drive
*JVC Wondermega (Xeye in North American release, never released in Europe), was a all-in one Sega CD unit
*Sega Multimega (named Sega CDX in North America)
*Pioneer LaserActive Sega CD module, an add-on device you could add to a Laseractive Pioneer [[Laserdisc]] player.

What it adds to the Megadrive:
* 10 extra sound channels to complement the sound from the Megadrive Z80 sound processor.
(contracted; show full)* 8X internal over-sampling digital filter
Audio:
* Frequency Range: 20Hz - 20 KHz
* Signal-to-Noise Ratio: >900dB @ 1K
* Channel Separation: >900 dB
Output: RCA Pin Jack x2 (L/R)
Dimensions: 301mm x 212.5 x 112.5
Weight: 3.1 lbs