As E-MU prepares the for the release and launch of its next-generation Emulator X3 Streaming Sampling Synthesizer software, they have released, for free, the full version of the Proteus VX Software Sound Module software which includes the enhanced v2.0.1 Proteus X Composer Bank (a special E-MU tweaked version of the Composer bank) that can be used in all versions of the Proteus X or Emulator X software.

Proteus VX is not copy-protected or card-locked like other versions of E-MU's instrument and sampling software, and can be used either as a VSTi or in stand alone mode on Windows (Proteus VX will install and function for most users on Windows Vista but is only officially tested and supported for Windows XP).

Proteus VX was previously only available as part of the "E-MU Production Tools Software Bundle" which is included with various E-MU hardware products.