Automatic Level Control. The Audimax automatic level control is wholly different in concept from ordinary compressors, limiters, or AGC devices. Two features which are unique to the Audimax design are the gain platform and the gated gain stabilizer. The exclusive gain platform principle permits gain to remain on a stable plateau over a wide range of input levels rather than continuously being allowed to rise and fall with consequent distortion, thumping and pumping, and audio ‘holes’. Laboratory Compressor! Excellent for Mastering.