R&S, 50 Weapons and Shogun Audio are among the imprints who will release music in the Native Instruments-developed multichannel audio format.
The audio format, developed by Native Instruments but released as an open-source standard that can be used by any compatible software or device, gives DJs access to four parts of a full mix: drums, bass, synths and vocals, for example. The idea is to expand the options available to DJs in the mix—DJs can mix between and combine elements of tracks in ways they couldn't with EQ and faders alone. (Stems, packaged inside standard MPEG-4 files, also play as standard stereo mixes through iTunes, CDJs, etc.)
Now, Native Instruments say they have several hundred labels who have signed with Stems, including such notables as R&S Records, 50 Weapons, Ovum Recordings, Ghostly International, M-nus, Hypercolour and Hotflush Recordings.
You'll find a more extensive list of labels quoted below.
50 Weapons, Abstract Architecture, Autofake, Baroque Records, Black Hole Recordings, BluFin, Cadenza, Cr 2 Records, Deeptown Music, Dimmak, EPM, Factor City, FLASH Recordings, Formatik Records, Get Physical, Ghostly International, Green, Herzblut Recordings, Hotflush Recordings, Hydrozoa, Hypercolour, InFiné, Intec, KD Music, Kling Klong, Lapsus Music, Large Music, m-nus, Manufactured Music, Milk & Sugar, mobilee, Monaberry, Monkeytown Records, Moon Harbour, Myth Music, Noir Music, Objectivity, Octopus Recordings, Ovum Records, Pild Records, R&S, RAM Records, Rejected, Room With A View, Sci + Tec, Simplify Recordings, Shogun Audio, Spektra Recordings, Spinnin Records, Systematic Recordings, Toolroom Records, Upon You Records, Watergate Records