Kritical Audio is a electronic music duo formed in 2004 in Uppsala, Sweden by Martin Skogehall and Robert Elster.
Robert and Martins friendship goes all the way back to kindergarden. Kritical Audio generally  considered to be IDM/break/electro in style, their music has incorporated a variety of genres thou.
Both Robert and Martin has been in the electronic music scene since the late 90s in different constellations and with a variety of styles.  
One of their most estimated song is Krupp from their 2005 release on Detroit Underground (US) that has been played a lot thru the years and still is a popular track for all kind of DJs.
Kritical Audio made most of their music 2004-2006 but you never know when they will strike again…