The GML 2020 is a single channel combination of features from the legendary 8300 Mic Pre (a 4 band version of the 8200 Parametric EQ) and a the 8900 Dynamic Range Controller. Further enhancements not found in the stand-alone units include: Mic, Line, and Direct Instrument input selection, front panel 2-Pole High Pass Filter, Phase Reverse, and Phantom Power switches, along with accurate LED input metering. From -10dB of attenuation up to a whopping 70dB of amplification, Input Gain is selectable in precise 5dB steps accommodating all sources from low output ribbon mics through semi-pro keyboards to inserts in super hot mastering chains with one knob. Both the EQ and Dynamics sections may be independently bypassed and up to eight 2020 units can be linked for multichannel work.

A particularly useful feature on the 2020 is the ability, at the flick of a switch, to place the EQ section either before or after the Dynamics section, or inserted it into the Side Chain. This feature alone makes the 2020 an extremely flexible recording tool. A rugged 2U chassis houses all these great features together.

Unit requires use of the external GML 9015 Power Supply Unit