Yes, this keyboard is not top of the line which I believe is fine. I just want to use it as a MIDI keyboard by using virtual instruments. I think I understand what you're getting at. I looked at the manual online.
Are you saying the adapter in the link plugs into my headphone input? Then I use two TRS cables to plug into the mbox? one in DI and one in the TRS input???
My midi to usb cable won't do the job?