Purchase Discrete 4/8 Premium and it will come with the Pemium Upgrade Pack code included.
Purchase the Discrete 4/8 bundle with microphones and it will come with the Premium Upgrade Pack included in the box.
Purchase Premium Upgrade Pack as a stand alone item after getting your Discrete 4/8 Basic. Order either from antelopeaudio.com or from your preferred dealer.
See how to activate your Premium Upgarde Pack here: https://en.antelopeaudio.com/support/getting-started/explore-discrete-8/