For the turntable junkies. Check out their website (in German).
http://www.electronicdesign.com/analog/achieving-ultimate-fidelity-advanced-motion-control-engineer-s-perspective?NL=ED-001&Issue=ED-0
http://www.electronicdesign.com/analog/achieving-ultimate-fidelity-advanced-motion-control-engineer-s-perspective?NL=ED-001&Issue=ED-0