I misunderstood - I thought you were using the case of the 605 to keep all your SCSI devices in! So ... the Akai and the Mac are connected to the SCSI chain at the same time? I remember you could do that with my old Ensoniq EPS samplers; they must have a different SCSI ID to the Mac, and there was some software that interacted directly with the sampler from the Mac. Is that the case with the Akai as well?