Equalisers

Equalisers, or EQs, are tools used in recording studios to adjust the frequency response of an audio signal. Classic EQ units are typically used to cut or boost certain frequencies, allowing the engineer to shape the overall sound of a recording. The frequency bands that an EQ can adjust can vary, but most common EQs feature a low-frequency band, a mid-frequency band, and a high-frequency band. The engineer can adjust the gain of each band to either cut or boost specific frequency ranges in the audio signal.

Related Articles: Equalising for Spectral Character | The Birth of the Parametric Equaliser

Released in 2016
The Thermionic Culture The Swift is a two-channel valve equaliser suited to both individual tracks and stereo mix buses, offering Baxandall-style active bass and treble controls, a Presence switch, passive Pultec-inspired mid lift, high-pass filter, mid cut and Air circuit. It delivers up to +20 dBu output with minimal noise and uses only two valves per channel alongside custom Sowter transformers for a clean, musical sound.
Made In U.K.
Released in 2016
The SPL PQ is a unique equaliser, for several reasons. It has two times five fully parametric filter bands, each of which can be switched between constant Q and proportional Q! And there’s sheer unlimited headroom and a very special kind of EQ sound – thanks to 120V technology.
Made In Germany
Released in 2016
The Undertone Audio MPEQ-1 is one of the most powerful and musical Class A equalisers ever built as well as a wonderfully flexible, beautiful sounding Class A Mic Preamp/DI.
Made In U.S.A.
Released in 2016
The Tegeler Creme combines a passive EQ based on the Pultec principle and a high-end bus compressor in a single device.
Made In Germany
Released in 2016
At the heart of this stereo unit are gently sweeping treble and bass EQ shelves (the Baxandall Curves) that give you subtle yet profound control over wide sections of the frequency spectrum. The opposite of a surgical tool, the BAX EQ is all about sweetening sounds with broad, musical adjustments.
Made In U.S.A.
Released in 2017
The Warm Audio EQP-WA Program Tube Equaliser is a faithful recreation of the industry-standard tube equaliser, the Pultec EQP-1A.
Made In China
Released in 2017
The A-Designs Hammer 2 is a dual-mono, three-band valve equaliser known for its musical tone and ease of use. It enhances audio even with flat settings, thanks to a unique circuit that preserves tube harmonics while filtering noise. With a wide frequency range, floating Q, and intuitive controls, it excels on mix buses and in tracking. Built with high-quality components and vintage-inspired aesthetics, it’s a powerful and versatile studio EQ.
Made In U.S.A.
Released in 2017
The Klark Teknik EQP-KT is a classic Tube Equaliser with Switchable-Frequency Selection, Variable-Bandwidth and Custom-Built Midas Transformers.
Made In China
Released in 2017
The Chandler Limited TG12345 MKIV equalizer is a handmade, fully discrete, mono, single space module, designed for the 500 Series format.
Made In U.S.A.
Released in 2018
Soma is a clear departure from the old “passive EQs are for general shaping only” paradigm. It is the only commercially available passive EQ with real Q adjustment, which makes it more usable and accurate than other products which use only a resistor-based Q adjustment which affects boost/cut amount and does not offer a wide range.
Made In Finland
Released in 2018
The Gyraf Audio G23-S is an original design Tilting-type Equaliser aimed mainly at mix and mastering, for the situations where you have a mix that is already nearly perfect balanced but want it a tad darker or brighter without messing up the overall definition. The recent -S version has been extended, now containing two entirely different topologies for makeup gain and interfacing.
Made In Denmark
Released in 2018
Knif Eksa is an exercise in ultimate purity of sound, and unlike all other Knif products, it is not tube based, but uses in-house designed and produced class A discrete OP amps.
Made In Finland