You are watching an EPROM with the last official firmware release for the Oberheim Matrix 6 and Matrix 6R. 

- Select V2.13 for Matrix 6R (rack version)

- Select V2.13a for keyboard as this version has slight changes in code to eliminate a problem with bender lever (it widens the dead zone. In previous versions you had to keep lever exactly at center for no pitch change).

New EPROMs  protected with UV proof stickers.

The price includes registered shipping to any part of the world. Shipped from EU.