The Orion by Mindplace was an inexpensive light and sound mind machine that contained brainwave frequency sessions targeting all four general states of consciousness: Beta, Alpha, Theta and Delta. Here is a brochure from 1996 first introducing the Orion mind machine to the general public:
The back of the brochure is still a great read, detailing the advantages of using this great little brain machine, also known as a psychowalkman…
A few years after the Orion’s introduction, upgrades were made and this Mindplace light and sound machine became known as the Sirius light and sound instrument. But after a few more years the Orion / Sirius was retired, mainly due to the increased popularity of the Mindplace Proteus, Procyon and Kasina Mind Media mindmachines.