My apologies for not posting in the appropriate forum.
Wookiee: Yes, I have downloaded the manual and looked all through the Arturia site. The manual says: "Low latency drivers on Windows are provided by Arturia and are automatically installed with the AudioFuse Control Center installer." There is no further elaboration.
I assume there will be ASIO drivers because that is a standard, but I'm asking this question specific to Sonar users because of Cakewalk's earlier work with Microsoft in the WDM drivers. M-Audio was noted to have used this development at that time for their drivers. When I operate the M-Audio WDM drivers within Sonar, the latency can be set very low. If I switch to ASIO, I cannot get the same latency. M-Audio no longer supports these drivers. I tried another interface and the ASIO was about the same but the WDM did not perform well at all. When I use Reaper, The ASIO are about the same, and the WDM do not perform as well. I am aware that the drivers are provided buy the interface company, but obviously some are better than others, especially in the WDM standard. When WDM works well, it works very well in Sonar.
I was inquiring if anyone has had actual experience with this interface in Sonar specifically.