SPL Mercury - Mastering D/A Converter (Black)Mercury is the first mastering DA converter in 120V technology. It offers seven digital stereo input sources, all of which can be synchronized with each other or with a word clock. The additional variable output qualifies Mercury as a monitor controller. Seven Digital Sources Mercury provides connections for a total of seven digital stereo input sources. For each digital source there is a dedicated and illuminated tactile switch for quick selection