SoundID Reference for Multichannel delivers accurate and reliable reference sound for speaker setups from simple stereo up to 9.1.6 Atmos systems. It also works for headphones, so you can also calibrate any of the 480+ headphone models from our growing headphone profile database to achieve consistent reference sound between your headphones and speakers. What's included Activation key for the product license: the product can be activated and used on 3 machines Microphone clip for a Ø21?26mm microphone, with a 5/8" screw-on thread SoundID Reference DAW plugin for Multichannel (AAX, AU, VST2, VST3) SoundID Reference standalone app for Stereo (ASIO, WASAPI, APO, HAL) Requirements during the speaker measurement process: SoundID Reference Measurement Microphone, or Sonarworks XREF 20 Measurement Microphone Microphone stand for multichannel system measurements XLR to XLR audio cable +48v Phantom Power support The same audio interface must be used for input-output The audio interface must support and be set to one of the following sample rate formats: 44.1kHz, 48kHz, 88kHz, 96kHz, 192kHz The audio hardware setup must consist of a single external hardware device only (additional preamp units are supported)