 The Monterey Pop experience transformed Jacob from a regional to a national figure in the field of concert sound.After Monterey, Hendrix's road manager, Gerry Stickels, called McCune to request Jacob as sound designer and mixer on tour.Jacob specified a sound system much like the one at Monterey, and first deployed it for Hendrix at the Ambassador Theater in Washington, D.C., during August 9–12, 1967, where he mixed the Jimi Hendrix Experience.