GML 8900

Twenty-two years of progressive research into loudness perception resulted in a limiter/compressor unlike any other. The 8900 Dynamic Range Controller was intrinsically developed to react to loudness (rather than volts) like our ears do. The unit combines highly accurate log converters, true RMS detectors (which provide control of signal energy not just level), and other modern analog processing techniques in a stable "feed-forward" topology.

The 8900’s psycho-acoustic approach uses multiple true-RMS detectors, remarkably accurate log converters, and fast peak detectors to respond intelligently to real signal energy, not just level. This unusual design employs unique controls, like Crest Factor, Timing, and Release Hysteresis to access the parameters that 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, creative control over a wide dynamic range with a lack of audible artifacts. Very useful is the Side Chain Input that permits external frequency shaping to be introduced into the detection circuitry. The entire audio path is all-discrete, including the VCA, for unsurpassed transparency and low-level resolution. The 8900 packs all of this in a formidable 2U, two-channel unit which requires requires the external GML 9015 Power Supply.



GML 8900 Features :

• Familiar compression parameters and side-chain input for ease of use
• All-discrete audio path for low noise and transparency
• 2 channels, each with Separate Peak and Dual RMS Detectors
• Front Panel Sidechain; Stereo and multiple unit control link
• 40 Segment Tricolor meter w/ Meter range -20 to +20, true gain through unit
• 4 segment instantaneous ratio meter (approximate indication of soft knee actuation)
• Peak, FastRMS and SlowRMS indicators
• Unique psycho-acoustic approach to dynamic control
• The result of more than twenty years of loudness perception research
• Unique psycho-acoustic approach to compression
• Unusual design with unique controls: Crest Factor, Timing, and Release Hysteresis to access parameters you really want to adjust
• Conventional compression parameters easy to set
• Side Chain input for external frequency shaping to control circuitry
• All-discrete audio path for unsurpassed transparency and low-level resolution
• Requires an external GML 9015 Power Supply

A different way to approach compression
The 8900's psycho-acoustic approach uses multiple true-RMS detectors, remarkably accurate log converters, and fast peak detectors to respond intelligently to real signal energy, not just level. The GML8900's unusual design employs unique controls, like Crest Factor, Timing, and Release Hysteresis to access the parameters that you really want to adjust.



Maximum control with minimum artifacts
Using the GML8900, you'll still find familiar features such as Stereo Link, Soft/Hard Knee, Ratio, Output Level, as well as a comprehensive 40-segment tricolor Gain/Loss meter. All have been carefully optimized for flexible, creative control over a wide dynamic range with a lack of audible artifacts. the 8900 also includes a very useful Side Chain input that permits external frequency shaping to be introduced into the detection circuitry.



All-discrete circuitry for low noise and audio transparency
The entire audio path of the GML8900 is all-discrete, including the VCA, for unsurpassed transparency and low-level resolution. And the 8900 packs all of this in a formidable 2U, two-channel unit which fits into any studio configuration.