Das Keyboard Products
There have been multiple generations of Das Keyboard:
The first iteration ca. 2005 was a black ANSI layout rubber dome keyboard with unlabeled keys in a Model M-like shape. The now-uncommon shape and claim of individually weighted keyswitches suggest that it was a custom version of a Key Tronic E03600.
Das Keyboard II, still with blank keys only, was the first to feature mechanical keyswitches (Cherry MX, blue stem), which increased the keyboard lifespan and improved tactile and audio feedback. It has been identified as a custom Cherry G80-3000 by case shape, PCB labels and production in the Czech Republic.
The third iteration in 2008 was the first to be offered in both Ultimate (unlabeled) and Professional (labeled) versions. This USB-only keyboard also offered 6-key rollover capability (the maximum for a conventional USB HID keyboard), an internal 2-port USB hub and came with a glossy surface. Both 104-key (ANSI) and 105-key layouts (ISO) were offered. This version was not without its problems, however, as it became known that key transposition errors could occur at high typing speeds. In addition, interoperability issues related to the USB hub were noticed with some systems.
The "Das Keyboard Model S" constitutes the latest addition to the lineup, as of late 2009. It contains revised electronics to address some of the common complaints along with supporting media keys and PS/2 operation. Again, it is shipped in both Ultimate (unlabeled) and Professional (labeled) versions, both 104- and 105-key, with the addition of a labeled Professional Silent model featuring non-clicky but tactile MX brown stem keyswitches. The latter is intended for applications demanding lower noise levels than obtained with the regular clicky MX blue stem switches while retaining a similar tactile characteristic. First samples showed improvements in areas where the previous model had problems.
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