World Music Supply | 2 decades ago

http://www.worldmusicsupply.com/behringer-ultra-shifter-us600-pitch-shifter-harmonist-effects-pedal/

Joe Delaney of Behringer demonstrates the US600 Ultra Shifter / Harmonist pedal for electric guitar.

Joe's guitar in this video is a PM20 from Parker.
http://www.worldmusicsupply.com/search.php?search_query=Parker