when igl opened on june 1, 1965, its equipment list was as follows: one ampex 3-track recorder using 2" tape, two ampex 4-channel mixing consoles, four electro-voice sentry monitors, one mcintosh amp, two neumann m49 mics, one neumann u67 mic along with other mics, outboard gear, stands and cabling. a single track ampex recorder was purchased in 1966. then, in 1972, an ampex 2-track mastering recorder and an ampex 8-track recorder were added to the facility along with more outboard gear. the studio space was also expanded and modified around this time to better serve the clientele.