The entire operation of adjusting levels of microphones, Blu-ray players and other inputs, processing audio signals with internal EQ and other effects, and distributing those signals to power amplifiers or external controllers, can be handled with single device.

The SD Memory Card slot allows direct playback of MP3 or WAV format audio files. These files could be a source for music playback which can be accessed remotely or, they could be preset announcements or messages that are broadcast according to the built-in scheduler function. Lastly, the SD card could also store the chime sounds which are triggered from a PGM1 paging station.

It is possible to add to the MRX7-Ds built-in I/O using the EXi8 and EXo8 Input/Output expanders. Featuring either eight mic/line inputs or eight analogue outputs, they transmit to and from the MRX7-D using Yamaha's YDIF format over distances of up to 30m. The MRX7-D also features one Mini-YGDAI card slot that can accommodate optional cards that support a variety of audio formats, and expansion by up to 16 I/O channels.

Using two types of networking in MRX7-D can significantly reduce installation cost and time. The combination of YDIF for shorter system connections and DANTE for larger installations can considerably improve design flexibility.

The MRX7-D is equipped with dual Dante ports that allow 64 channels of inputs and outputs @44.1kHZ/48kHz to be run on a redundant network. Both simple and larger, sophisticated Dante network systems can be created using MRX7-D and the Dante enabled XMV-D amplifiers.