The 'QS' (quad streamer) has been specially developed for the integration of an audio system throughout the house, and offers audio streaming for four zones and hi-fi audio reinforcement for eight channels. All these options are built into a super-slim housing with a height of 1U, suitable for placement in a rack. The simple expansible and extremely flexible QS works together with it MusicCast- Multi-cream system and can therefore be linked to AV receivers, Soundbars and Hi-Fi installations in the most diverse configurations. Specially designed for integration of a MusicCast- multi-cream system via the network (Ethernet) in a rack or cabinet streams four audio zones per unit, expandable to 32 zones with simultaneous display in linked groups of up to 20 zones to allocate eight channels with audiophilic class D amplification, by zone, with bridgym and suitable for 4 ohm, with a unique circuit to prevent earth loops / brom Pandora®, Spotify® Connect, SiriusXM Internet Radio, Tidal, Deezer, Napster and more built-in, plus access to music libraries and linked external sources easy to operate via the free MusicCast-App and external control systems from other companies housing suitable for placement in a 1U high rack, including removable rack brackets and front plate.