GML GML2032
Owner's Manual

DESIGN
On the surface it is not eminently evident just how much "new" design is represented in the Model 2032 Microphone Preamplifier / Parametric Equalizer. Indeed, the equalizer section has been barely modified from the reference-standard Model 8200 Parametric Equalizer, while the Model 8300 Transformerless Microphone Preamplifier is largely copied in the preamplifier section. The design innovation, however, of the Model 2032 lies, at least partially, in the confluence of these diverse parts into a cohesive and extremely precise whole. The most notable and noticeable addition to the aforementioned GML legacy products embodied in the Model 2032 is the inclusion of an internal power supply--a first for GML. While the absolute lowest noise performance can best be achieved with an external power supply, this completely original design minimizes the compromises in order to yield the savings in space and cost that can derive from an internal supply topology. The inclusion of multiple inputs certainly adds to the allure of the Model 2032, where the MI input circuitry represents a welcome addition to the standard microphone input. The Input XLR can even accommodate low-level �line� sources needing 10dB of gain or more, assuming the external device�s output can drive the 1k load impedance. Thus, the Model 2032 preamplifier can capably handle a wide array of input sources. Much akin to the input section of the Model 2020, the preamplifier section of the Model 2032 builds upon and expands the capabilities of the Model 8300. The inclusion of a polarity inversion function (Phase) and front-panel phantom switching (P48) certainly bolster user-friendliness. Similarly, the Fine control adds flexibility by ensuring the ability to find optimum gain staging between 5dB steps, while also allowing instant gain adjustment with near-infinite resolution. The Insert function of the Model 2032 complements the various processing blocks, providing a great deal of versatility. With the press of this button, the preamplifier and equalizer can be split apart for either completely independent operation or for insertion of an external device between them. The front panel capacity to switch between inputs also augments the agility inherent in the Model 2032. Though the front panel equalizer controls seem very intuitive to the initiated and experienced audio engineer, the circuit design behind these controls is anything but simple and straightforward. The Model 2032 equalizer section features an exemplary balancing circuit in addition to the actual equalization circuits. It is important to keep in mind that all circuits in any device necessarily alter the sonic character of any complex signal, though these colorations have been meticulously minimized in the design of the Model 2032. Therefore, no alteration is required to compensate for the spectral signature induced by the unit itself. Great care has also been taken--as in all aspects of the GML Model 2032--to select the highest quality components, from the potentiometers on the front panel to the smallest