Aphex Systems was founded in 1975 in Massachusetts by Marvin Caesar and Curt Knoppel, the inventor of the Aural Exciter. Aphex is dedicated to the development of high-quality products for the professional audio, broadcast, fixed installation, touring-sound and home-recording markets. Through that dedication, Aphex has developed a number of industry-standard devices, such as the Compellor, Dominator, Expander/Gate and Expressor, plus the Model 1100 Two-Channel and Model 1788 Eight-Channel Ultra-Precision Remotely Controllable Microphone Pre-Amplifiers, and the Model 2020 Mk III Broadcast Audio Processor.