NUGEN Surround SuiteNuGen Audio Surround Suite bundles the Halo Upmix, Halo Downmix, ISL 2, and SEQ S plug ins to provide post and broadcast engineers with a consistent surround workflow to upmix, downmix, and reshape multichannel sound. The suite offers all of the tools necessary to achieve natural and coherent upmixing from stereo to 5. 1 and 7. 1. Create precise downmixes of surround material to a stereo mix, as well as tweak and refine your mix with true peak