Iconic Trident EQ For Your 500 Series Chassis
In the 1970s, just about every major pop act recorded at London’s Trident Studios. At the heart of the studio’s sound was its in-house-built A-Range console, which quickly became famous for its highly musical EQ and the rich, fat tone it imparted to every signal passed through it. Featuring all-discrete hand-wired circuitry developed by Malcolm Toft and Barry Porter, only 13 of the original A-Range desks were ever made. Worldwide demand for the “Trident sound” resulted in the more widely distributed 80 Series consoles, which went on to record countless hit records in the late ’70s and ’80s. Today, Trident Audio Developments’ 80B 500 Series EQ meticulously re-creates the circuitry of this classic 4-band equalizer, serving up legendary sonic character and formidable tone-shaping prowess in a convenient 500 Series module.
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Powerful British EQ
The Series 80B 500 Series EQ equips your rack with the four-band EQ from the Trident Series 80 console — one of the most iconic “British EQ” circuits ever designed. You get switchable high and low shelving bands, augmented with two swept low- and high-mid bands and a switchable 12dB/octave 50Hz highpass filter. The interaction of the midrange bands has been carefully engineered for maximum effect on music program material and a generous overlap is provided for flexibility.


Formidable tone-shaping
A painstaking re-creation of the 4-band equalizer from the Series 80 board, Trident Audio Developments’ 80B 500 Series EQ gives you a High band switchable between 8 and 12kHz, a High Mid band sweepable from 1 to 15kHz, a Low Mid band sweepable from 100Hz to 1.5kHz, and a Low band switchable between 60 and 120Hz. Also onboard is a 12dB/octave 50Hz highpass filter and a handy peak overload LED. The Series 80B’s unique, highly resonant Q peaks are cultishly coveted by many world-class engineers for fine-tuning instrument sounds. Sweetwater’s advice: the 80B 500 Series EQ is highly musical, very powerful, and sounds like no other. It will be a valuable tool in your quest to make ever-better-sounding recordings.
Trident Audio Developments 80B 500 Series EQ Features:
- Classic Trident Series 80B 4-band EQ
- High band switchable between 8 and 12kHz
- High Mid band sweepable from 1 to 15kHz
- Low Mid band sweepable from 100Hz to 1.5kHz
- Low band switchable between 60 and 120Hz
- 12dB/octave 50Hz highpass filter, defeatable
- Peak Overload LED
- Bypass switch