The iControl Virtual Service Manager (VSM) is used to create virtual devices, of which there are two types:

Proc amps (processing amplifiers) are virtual devices that control Grass Valley Imaging-series processing interface cards, such as the ASD‑231i, the DVP‑101i, and the DAP‑712i. Proc amps allow you to monitor and control up to three cards (one video, one audio, and one audio delay card) from a single panel. Unlike composite panels (see below), proc amps cannot be customized—the gains (controls) that appear in a proc amp panel are determined by the type of card selected when the proc amp was created.

Composite panels, like proc amps, are virtual devices. They are used to control Grass Valley Densité-series and some Imaging-series processing interface cards, such as the DEC‑1002, the XVP‑811i, and the UAP‑1781. Composite panels allow you to monitor and control multiple cards from a single panel. Unlike proc amps, composite panels can be customized—each card has a list of available gains (controls) from which you can choose, in any combination, when you create a composite panel.