Many years ago, I worked at a audio specialty retailer in East Lansing, Michigan. As audio specialists, we not only sold and serviced some of the finest audio brands around, but we also sold test gear for users and pros to use to test and fine tune their systems. And one of the brands we sold that offered high quality testing products was AudioControl, who along with their line of graphic equalizers also offered things like spectrum analyzers with calibrated microphones.
They still sell testing gear and now will be showing their latest iOS-based digital test measurement solutions at InfoComm 2019.
