George,

As is the case with most tech today, compatibility is usually uni-directional & downward. The newer models will recognize and LOAD (to an extent) files that were created/ment for older models, but the reverse won't always be true. The X1 will not read most files created on the SD1 except MIDI files due to differences in buffer & memory size, and configuration. For the SD1 to sound as good as it does, a lot of revision had to be made on the tone generators and more memory was needed (which is currently not present on the X1). So when you create & SAVE an MSP on the SD1, the file is configured in a manner not 'understood' by the X1 for the SD1.

A work-about will be to:
* physically link the SD1's output to the X1's input using a 1/4" cable.
* LOAD the MSP into the SD1.
* Press SEQUENCER tab on the X1 and RECORD samples manually (you might need to repeat for each MSP).
* Later, SAVE in X1 all files recorded. When complete, proceed to CREATE MSP in X1. This way, you'll have the MSP in the X1 with the X1's format. Maybe there is software out there (which I am unaware of) that can achieve this with less steps!

Thanks for your comments wrt KETRON and I hope my above solutions helps ... in a way.

AJ