This thread is embarassing.
Michelle911 asks if Sonar supports Hypercontrol, and the forum "experts" (apologists) go on to explain that its problematic, not something that you should want, and that Sonar's ACT functionality already does this.
Michelle- Sonar does not have tight integration with much hardware on the market. There is the Roland A500/800, and also the Nektar Impulse LX advertizes Sonar integration. I have the Nektar, the basic functionality works well (transport, faders, bank switching), but there are problems using it to navigate the synth rack and control synth parameters. Using the stock Nektar profile in conjunction with a custom ACT profile for plugin control can do most things, but its not ideal.
If you want tight hardware integration, probably best to choose Cubase as it seems many devices are compatible with it.
Hardware integration is weak in sonar. There is ACT midi mapping, but it is definitely "roll your own" and takes some study.