Hi Tim The protocol is Native for Sonar. Ive got the control surface working under Sonar. Although, it took some searching on the forums. Im not very happy with the kind of support Presonus provides in its documentation. At least, I was able to find a work around. The Fader Port retails around $ 169.00 cad so it might be an inexpensive option for persons looking for a portable control surface. It has 1 channel strip with a motorized fader. So far, I like what Im seeing. The rewind and loop buttons are a bit quirky though so Ill have to find a work around. Anyways if you have a means of coaching me on how to make the surface accessible under Surface Reader that would be most excellent. Thanks in advance Joël Logo comprises house with A frame roof, with piano keyboard driveway and music notes coming out of chimney, phone number is 613-799-2953, email is thelittlehousestudio@gmail Freelance Musician & Itinerate Coach for the Visually Impaired and Blind 87 Morton Dr. Kanata, ON Canada K2L 1X2