vst~ Hosts VST plug-ins Hosts VST plug-ins. The vst~ object loads a real-time VST plug-in and uses its audio processing in MSP. Some plug-ins have their own editing window, which is visible when you double-click on the object. Otherwise, double-clicking on the object displays a default parameter editing window. The number of signal inputs and outputs default to 2, but the number required by the plug-in may be less than that. If you want to specify a larger number of inputs and outputs, you can supply them as optional arguments.

from the library : MSP Format : External Environment : msp commercial Max 4.x http://www.cycling74.com