The  A-Range 500 Series Equalizer Module from  Trident Audio  is a faithful recreation of the original four band Trident A-Range equalizer in a 500 module format that will add the Trident signature to any program material. It can be used when paired with a modular rack and mixer (sold separately) to tailor sound for recording and broadcast applications.

The A-Range 500's mid-frequency EQ sections are peaking, while the high- and low-frequency sections are shelving. The module features faders for level adjustment rather than rotary potentiometers and are equipped with a center detent at mid travel to denote zero boost or cut of the selected frequency. Faders make it easy to see how much equalization is being applied.
 
Furthermore, each band is rotary-switch selectable to one of four frequencies. Individual push buttons engage the three high-pass and three low-pass filters. An LED peak-level indicator is included to warn when levels get too high. The line-level input and output are balanced for maximum signal integrity and high output levels with minimum distortion.
 
Finally, by incorporating the features of the A-Range 500 module and both shelving and peaking equalizers into the design, it is possible to get the best of both types of EQ to tailor your sound.
Faithful recreation of the original four band Trident A-Range equalizer in a 500 moduleAll discrete transistor circuitry and the use of inductors in the upper and lower mid bands.
 
A distinguishing feature of both the original A-Range console and this module is the use of faders for level adjustment rather than rotary potentiometers. Each band is rotary-switch selectable to one of four frequencies, while individual push buttons engage the three high-pass and three low-pass filters.