Dangerous Music Monitor SR. Surround expansion module for Dangerous Monitor ST, providing full 5.1 capability. You can start in stereo with the Dangerous Monitor ST and expand to surround later, simply by adding the Monitor SR. No redundancy or obsolescence! All four inputs can be surround or stereo sources. Internal routing, allows effortless switching between stereo and surround operation with seamless sharing of a front pair of speakers and subwoofer. 19", 1RU.

Monitor controller and analog summer in one device Precise level relay volume control, Four independent headphone outputs with dedicated volume controls, Software Control & Talkback via PC, Tablet or Smartphone...

SPL SMC 2489 Surround Monitor Controller - D-Sub balanced 50kohm inputs

"Focusrite RedNet AM2, Stereo Dante headphone amplifier and line output interface solution with PoE (Power over Ethernet), Headphone/Loudspeaker Stereo Monitoring Solution for Dante, includes a two-channel Dante..."