QSC history

In 1975, the company was incorporated and its name changed to QSC Audio Products, Inc.

A 300-watt stereo amp was added in 1977, which was then followed by six "A Series" models that put out as much as 325 watts per channel.

In 1978, Quilter patented the AC Coupled Amplifier Circuit, which allowed the mounting of high-voltage transistors onto a grounded metal heatsink.

In 1982, QSC introduced its highest-power amplifiers to date, the Series Three line.

In 1985, the MX 1500 amp debuted, and its combination of high power and a list price of less than $1,000 made it QSC's best seller to date.

In 1993, QSC moved into a new 51,000-square-foot facility on MacArthur Boulevard in Costa Mesa.

In 1995, the growing QSC was reorganized to improve customer service, and four sales managers were appointed to oversee the Retail/Musical Instruments, Engineered Sound, Cinema, and Touring/Live sound markets.

In 1997, the company introduced QSControl, which was a computer application that could be run on a personal computer to facilitate remote monitoring and control of audio amplification systems.

The facility, which opened in July 1999, had taken two years to design and enabled production of the company's high-end models via a "build-to-order" system.

2001: The company expands into speaker manufacturing through an alliance with ACE.