KLANG:technologies KLANG:vier, 3D InEar Monitoring Mixer for up to 4 individual 3D InEar Mixes or to extend the KLANG:fabrik up to 4 mixes, 4 balanced jack anoloque outputs (Line-Level) on the front, DB-25 out on the rear, 24 x 8 channel Dante-Interface, 24 channels Optical Audio Output, 1 power supply 100-240V, Word Clock (BNC/Output), remote by network (OSC), works with free IOS Klang:app for iPad and iPhone and Android app, 19" 1U housing, optional Klang:vektor Wireless-Motion Tracking System to track the head movement of the musicians on stage