VS-880: Limitations in Mastering Mode (V-Xpanded) April 12, 2023 07:36 Updated Follow When using the Mastering Mode (MAS) in the VS-880 V-Expanded, tracks 1-6 are available for simultaneous playback, with Tracks 7-8 unavailable. MAS mode is suitable for a recording in which you plan to use mainly 2-channel stereo audio. Related articles VS-880: Recording from a Digital Source in Input-Track Mode VS-880: Burning a Backup CD