Plug-in Compatibility
Stand-alone softsynths run as a program on the computer so additional software is not required. Plug-in softsynths require a host application such as a Digital Audio Workstation, which records the music that is played. Common plug-in technologies include VST, Audio Units (AU), Avid Audio eXtension (AAX), Real Time AudioSuite (RTAS), DirectX instrument (DXi) and MOTU Audio System (MAS).
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