Extensive research into how we perceive 'loudness' helped significantly in the development of a limiter/compressor unlike any other. The GML 8900 Dynamic Range Controller was designed to react to loudness rather than volts (in the same way our ears do) A psycho-acoustic approach to the design of the 8900 shows it using multiple true-RMS detectors, remarkably accurate log converters, and fast peak detectors to respond intelligently to actual signal energy, and not just level. This unusual design employs unique controls, like Crest Factor, Timing, and Release Hysteresis to access the parameters you really want to adjust.

Familiar features such as Stereo Link, Soft/Hard Knee, Ratio, Output Level, as well as the comprehensive 40-segment tricolor Gain/Loss metering have been carefully optimized for flexible and creative control over a wide dynamic range with almost zero audible artifacts. Very useful is the Side Chain Input that permits external frequency shaping to be introduced into the detection circuitry.

The audio path on the GML 8900 is all-discrete, including the VCA, for unsurpassed transparency and low-level resolution. All of these features are housed in a formidable 2U, two-channel unit.

Unit requires the use of an external GML 9015 Power Supply Unit .