If you haven't checked it out yet, check out the updates and comments to this OB-SX post. There are some interesting bits of info as to how Oberheim marketed the OB-X, OB-SX and OB-Xa as roughly the same synth. I disabled comments in this post to keep the comments on the previous post, so if you feel the need, comment there.PS, you can find the full size version of this image here.
