I was wondering if anybody out there has ever heard of the Proto Rooter. I read about this device a long, long time ago. It was invented in the 60s, and apparently if you plugged a monophonic synth into it, it would create chords based upon one note played on the synth. Does anybody have one of these things kicking around in their attic? I have looked everywhere for info on this but nobody even seems to have heard about it. If you can direct me to any info about this (either online or otherwise) that would be greatly appreciated! Thanks.