Cubase Score for Windows 3. Cubase 2. Cubase Audio 1. Cubase Audio 3. Cubase Audio XT 3. Recording multiple tracks at once was possible. One of the last versions of Cubase that is still compatible with windows 3. This version was upgradeable to Cubase Audio XT. One of the last versions of Cubase still compatible with windows 3. VST also included standards for plug-ins and virtual instruments, which were then also incorporated into third-party products. Up to realtime EQs. Professional effects rack with 4 multi-effect processors. Plug in interface for external plug-ins, allowing external audio technology to be integrated into the Cubase environment.