Thanks to Jan Steffens for reporting the issue.
modules/alsa/mixer/profile-sets/maudio-fasttrack-pro.conf \
modules/alsa/mixer/profile-sets/native-instruments-audio4dj.conf \
modules/alsa/mixer/profile-sets/native-instruments-audio8dj.conf \
+ modules/alsa/mixer/profile-sets/native-instruments-traktor-audio2.conf \
modules/alsa/mixer/profile-sets/native-instruments-traktor-audio6.conf \
modules/alsa/mixer/profile-sets/native-instruments-traktor-audio10.conf \
modules/alsa/mixer/profile-sets/native-instruments-traktorkontrol-s4.conf \