Equalisers

Equalisers are fundamental signal processing tools used to shape tonal balance in recording, mixing and mastering. From early passive and valve designs to discrete transistor and integrated circuit based circuits, hardware equalisers have defined the frequency character of countless recordings.

This archive includes vintage studio equalisers alongside modern hardware designs and recreations of classic circuits. From broad program equalisers to fully parametric systems, these processors remain central to professional studio workflows and analogue production techniques.

Made In China

Released in 2013 /

dbx 1231 Dual Channel 31-Band Equaliser

The dbx 1231 is a high-performance graphic equaliser tailored for audio enthusiasts and professionals. Featuring 31 bands of precision EQ, it provides extensive control over the audio spectrum for shaping and optimising sound in diverse settings. With its reliable design and versatility, the dbx 1231 is a go-to choice for those seeking advanced equalisation capabilities in studio, live sound, or installed audio setups.

Made In Denmark

Released in 2013 /

TUBE-TECH ME 1B Midrange Equaliser

The TUBE-TECH ME 1B is a passive, all-tube midrange equaliser inspired by the Pultec MEQ-5, featuring two boost sections and one dip section. With a broader bandwidth for smooth and musical EQ, it’s ideal for vocals, instruments, and midrange sources. It pairs perfectly with the PE 1C and is great for adding warmth and character, including the iconic Motown midrange sound.

Made In Poland

Released in 2014 /

IGS Rubber Bands Equaliser

The IGS Rubber Bands Equaliser offers an all tube Pultec style equaliser.

Made In Germany

Released in 2014 /

Elysia Xfilter 4 Band Equaliser

The Elysia Xfilter is a four-band analogue equaliser offering true stereo operation by linking dual channels with precision-matched components. Its flexible outer bands switch between shelving and resonant cut filters, the mid bands feature selectable wide or narrow Q factors, and an additional passive LC high-band filter adds polish, all while minimising noise with dedicated ground shielding.

Made In Poland

Released in 2014 /

IGS iQ Inductor Equaliser

The IGS iQ Inductor Equaliser offers the sweetest parametric EQ sound, with inductors offering similar saturation to transformers.

Made In U.S.A.

Released in 2015 /

API 550B Discrete 4 Band Equaliser

Based on API’s original API 550 from the late ’60s, the API 550b is a continuation of the EQ that played a major role in the history of music recording, but with an additional filter band and several new frequencies.

Made In U.S.A.

Released in 2015 /

API 565 Filter Bank

The API 565 Filter Bank module has circuits that are true to the musical filters of the famed 215 module found in large format API consoles.

Made In Germany

Released in 2015 /

Elysia Nvelope Shelving Equaliser

Elysia Nvelope is a versatile dual-channel impulse shaper and shelving equaliser that offers Full Range, Dual Band, EQ and Mixed modes for precise transient and sustain control, complete with an Auto Gain function to maintain consistent output levels and the option of Dual Mono or True Stereo operation.

Made In Denmark

Released in 2015 /

TUBE-TECH HLT 2A Equaliser

The TUBE-TECH HLT 2A is a unique equaliser, blending high and low shelving EQ, high and low cut filters, and an innovative “tilt” midrange EQ. This is the first time such a filter combination has been created in the analogue domain.

Made In China

Released in 2015 /

dbx 530 Parametric Equaliser

The dbx 530 Parametric EQ offers a unique degree of equalisation flexibility in the popular 500 Series format.

Made In U.S.A.

Released in 2015 /

API 560 Discrete 10 Band Graphic EQ

Originally conceived for use in API consoles of the ’60s and ’70s, the 560 is a unique device designed to accomplish tasks that no other EQ can. Extremely fast to set and reset using accurate zero detents, the curve shaping potential of the API 560 remains unmatched.

Made In U.S.A.

Released in 2015 /

API 550A Discrete 3 Band Equaliser

Few equalisers enjoy the respect and admiration of the coveted API 550A. Designed by the now-legendary Saul Walker in the late ’60s, the discrete 550A was first used as a modular OEM equaliser.