video upload by Gadje Strada
This is the first post to feature pictures of the Chestron. It was mentioned in Strange Synthesizers of Japan by Hiromichi Oohashi - Synth Book w/ CD as well as Peter Forrest's A-Z of Analogue Synthesizers. It's worth noting Toyo Gakki made the ULT-SOUND aka Ultimate Sound drum synths.
I found the video above after seeing the listing below. Note the video is from 5 years ago and I'm guessing it's not the same one listed.
via this auction
