"To my knowledge, the first Omnichord was introduced in 1981 (1982 in
the western hemisphere).
I think the 1975 model as advertised is as credible as a 1975 Buchla 200E. :-)
Senso"
Update: Shots of the original in via AH.
http://www.vintageplanet.nl/pics/sf2004/Omnichord-1.jpg
http://www.vintageplanet.nl/pics/sf2004/Omnichord-2.jpg
Update: Picture from Pimp Daddy Nash. That ain't made in 1975. That's just crapy advertising. Lame.
Update: Make sure to check out the comments of this post. I can't get through the title link to check it out for myself, but according to Pimp Daddy Nash (gotta love that alias : ) ), this unit has midi. One slight problem, midi didn't come out until 1983...
Update: From Bryan Carrigan via AH:
"Here's a track made with the omnichord beat, pad, and harp
pretty exposed in the intro. These are great for writing songs!
click on "tutelary genius"
http://www.cdbaby.com/cd/uhp"
Retro Thing has a post up on the Suzuki Omnichord, now the Suzuki QChord. The post got me wondering when this thing originally came out and if it was analog to start. Sure enough it was. The title link will take you to a site that has more info and shots, and actually has one for sale.
"Suzuki OmniChord OM-300 Model Analog Keyboard Synthesizer, c. 1975 (yeah right, this is the later model with midi), made in Japan, serial # 06300, ivory plastic finish, original box case."
Update via temp1 in the comments:
"Hi, the brown Omnichord OM-27 (ca. 1981) pictured is my Omniconcertino, that I modified with all the upholstry-tacks as body contacts and a guitar-pedal delay.
check here for more info and pictures of unmodified Omnis:
http://www.klangbureau.de/Omnicon_E.html
http://www.klangbureau.de/Omnihist_E.html"