I own both of these items and am willing to depart with them because I am not using either. The SP-404 is a year old and has minimal use still have box and users manual. I also have the digidesign mbox2 that has minimal use. I never really had the time to learn so I put them both up would be willing to sell both. I am asking $300.00 for the SP & $350.00 for the MBox2 will consider a package price if buying both.