Tweeter, formerly Tweeter Etc. and Tweeter Home Entertainment, was a specialty consumer electronics retailer providing mid and high end electronic equipment, including flat panel TVs, plasma TVs, car radios, home theater systems, GPSs and more. It also focused much of its business on custom installation of electronics for homes and automobiles. The company had more than 100 stores in 18 U.S. states, mostly along the east coast, but also including Illinois, Texas, California, Nevada and Arizona, operating under the names Tweeter, HiFi Buys, and Sound Advice.