Recording engineer and inventor George Massenburg charted his namesake electronics company GML (or George Massenburg Labs, to give it its full appellation) in 1982 to produce equipment for specific recording applications — most notably pioneering parametric equalisation, having authored and presented an AES paper promoting its virtues as far back as 1972. (For the benefit of the uninitiated, parametric EQs are multi-band variable equalisers that allow users to control the three primary parameters — namely, amplitude, centre frequency, and bandwidth or Q, and are consequently capable of much more precise adjustments to sound than other EQs — hence having become commonplace in recording studios.) More recent GML developments, such as the MODEL 2032 MICROPHONE PREAMPLIFIER/PARAMETRIC EQUALIZER, have been in progress, on and off, for 20 years. Alongside the above-mentioned single-channel, multi-input device for high-resolution studio and remote applications, the company currently manufactures a number of notable products, including the MODEL 8200 PARAMETRIC EQUALIZER SERIES II, billed by its creator as having been the industry-standard parametric EQ for over 20 years on account of being found on virtually every major recording studio’s stereo bus. Each of its five broadly-overlapping bands offers 15dB of boost or cut and adjustable bandwidth from 0.4 to 4, while the lowest and highest bands can also be switched to Shelf mode (used to reduce or increase signals above a set frequency). The MODEL 9500 MASTERING EQUALIZER is a mastering version of the 8200 with fully-detented gain, frequency, and Q controls for absolute precision and repeatability. With 1/2dB steps of boost and cut, and 24 different frequency choices per band, the 9500 is a powerful and comprehensive workhorse for mastering engineers around the world — little wonder, then, that it is favoured by Matt Colton, recipient of MPG’s coveted Mastering Engineer of the Year Award in 2013, for keeping things sounding sharp. Away from the wonderful world of parametric EQ, GML also has a number of dynamic range controllers, microphone preamps, channel strips, and power supplies to its notable name.