The all-new MDC2 architecture allows signals to be passed back and forth between module and host component. This opens a far wider range of upgrade options for the new NAD C 399 HybridDigital DAC Amplifier and future MDC2-enabled components. With the MDC2 BluOS-D module installed, listeners can enjoy the benefits of Dirac Live Room Correction, BluOS hi-res multi-room streaming and music management, and so much more. And thanks to NAD's MDC2 platform, component investments will keep pace with future developments.

The MDC2 BluOS-D is the first expansion module offered by NAD that adds Dirac Live room correction to a two-channel component. Owners use the supplied calibrated microphone and intuitive Dirac Live app to analyze their room's acoustics, and then upload correction filters to the MDC2 BluOS-D module. The MDC2 BluOS-D module can store up to five Dirac profiles for different listening positions and room conditions—for example whether the drapes are open or closed. As well as correcting peaks and dips in frequency response, Dirac Live optimizes impulse response by learning how sounds reflect off various surfaces in the listening space. The result is dramatically improved bass clarity, imaging, and timbral accuracy, on music and movie soundtracks.

The MDC2 BluOS-D module also features BluOS high-resolution music streaming. Available for iOS, macOS, Android, and Windows, the flexible BluOS Controller app provides access to hundreds of internet radio stations and more than 20 streaming services. Like all BluOS products, the MDC2 BluOS-D module supports high-resolution playback up to 24-bit/192kHz, as well as MQA. With the MDC2 BluOS-D module, users can share music from any source connected to the host component with up to 63 BluOS-enabled components on the same network. Playback can also be controlled by Alexa or Google voice commands, and from smart home control systems from Crestron, Control4, Lutron, RTI, and others.

Not only does the MDC2 BluOS-D module include the latest Wi-Fi and Ethernet protocols, but it also supports Apple AirPlay2, Spotify Connect, and Tidal Connect, and incorporates two-way Qualcomm aptX HD Bluetooth. There's also a USB port for playing music from a connected USB drive. With an MDC2 BluOS-D module installed, MDC2-capable components can play music from a vast range of local, networked, and cloud-based sources. And thanks to its bidirectional communications architecture, MDC2 is ready for technology upgrades that have yet to be conceived.