Dangerous Music D-Box+, Combined Summing and Monitoring System, Digitally controlled volume controller with extremely precise L/R synchronization and adjustable dim, Five analog and digital inputs directly accessible (analog stereo, analog sum, USB, AES/SPDIF, Bluetooth) - multiple selection possible, Bluetooth for wireless audio streaming, 8-Channel analog summator (channels 7+8 mono switchable), Built-in talkback microphone with push-button activation (on device or via app), Talkback via Smartphone (Bluetooth) possible, Two headphone amplifiers with independent source selection and volume control, Three independent loudspeaker outputs (selectable on device or via app), Programmable loudspeaker selection allows mono and/or subwoofer assignment to all outputs (on device or via app), Speaker outputs 2 and 3 can be trimmed, Reference class DA-converters for digital inputs, Free D-BOX+ App for remote control of all essential functions (Volume, Dim, Talkback, I/O selection and much more) for iOS 10.2 or higher and Android 5.0 or higher, USB audio connection for Mac OSX 10.10 or higher and Win 7 or higher, Dimensions (W x D x H): 483 x 344 x 43 mm, Weight: 5.26 kg