The Minitron

Remember The Minitron? Title link takes you to a page with more info and shots.

"Built in the 1970s by Norm Lederman of Oval Window Audio, it was actually a Graduate Thesis project, designed to illustrate the principles of tape-based loop technology. A complete user's, design, and technical manual exists with the keyboard, written by Norm. After being used by Norm for a quarter of a century, Craig Patterson and PME Records bought the monster, which is the only one of its kind in the world. On first glance, it shares some ideas with the Mellotron, but the Minitron goes the Mellotron one better in a number of categories"

Note Oval Window Audio now makes audio devices for the hearing impaired. Via fmasseti. BTW, in case the title link fails I backed up the shots and page here.