GML 8200 (Series II)

A dual-channel, 5-band parametric equalizer designed by the engineer who pioneered parametric equalization.

Overview

The GML 8200 Parametric Equalizer, also called the Series II, is a stereo bus EQ built by George Massenburg Labs. It's a dual-channel, 5-band unit, widely recognized as the reference standard in parametric equalization. George Massenburg, who invented the concept, led the design over ten years of development. The result is a fifth-generation progressive design. It was marketed as a benchmark for stereo bus EQs, and it has held an industry-standard position for nearly four decades.

Specifications

Product type	Dual-Channel 5-Band Parametric Equalizer
Frequency Response	±0.1 dB, 10 Hz to 80 kHz response (controls set flat)
Input Impedance	20 kOhm balanced bridging
Common Mode Rejection	32 dB common mode rejection at 20kHz
Channels	Dual-channel (2-channel)
Number of bands	5-band
Power Supply	8355 Power Supply

Design

George Massenburg designed the GML 8200. He is the engineer who invented and coined the term "Parametric Equalization." The 8200 is the fifth generation of his progressive design work, described as the evolution of his parametric equalizer concept. Each band has a Frequency potentiometer to set the center frequency. The unit is noted for its precision and transparency. The Series II version reflects a decade of listening analysis and refinement.

Context

For nearly forty years, the GML 8200 has been the gold standard that other stereo bus EQs get measured against. It has held an industry-standard reputation since its introduction, and it's praised for its sonic accuracy and build quality.