Drivers  http://www.colibrispindles.com/drivers.asp

The Spindle & Driver Package
In order to assure the best performance, Colibri offers to its customers a spindle & driver package solution:
Spindle, driver and driver accessories in one combined package.
The drivers are optimized to handle the spindle motors efficiently, with maximum performance.
The drivers offered are all digital and equipped with a friendly user interface.