Positive Grid Positive Grid is a professional audio software and hardware best known for creating products like JamUp. Positive Grid is committed to creating and developing new technologies for the worlds musicians and engineers. Founded:2007Founder(s):Unknown Average User Rating 0 0 votes Please sign in to rate. Your Rating 0 Contact Phone Number: Unknown Address: Unknown Email: http://help.positivegrid.com/hc/en-us/requests/new Online: History History coming soon!