hello, I have a problem with us 144MKII interface update the drivers mavericks mac and does not sound , if the notes but does not play sound .
if I can help !!
This unit is very finicky, seems to decide early on when the computer boots up and the usb port is accessed how it is going to cooperate. I am guessing, it is because it is using different usb controllers in that irq area, psongman
