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A transparent, breathy EQ
that brings your tracks to life.

In a self-professed quest for “audio perfection,” Cliff Maag designed the EQ4 to provide unparalleled transparency and top-end presence while maintaining a true, natural sound. Designed in conjunction with Brainworx, the Maag EQ4 plug-in for UAD hardware and Apollo interfaces is an expertly rendered emulation of this classic EQ.

Based on his legendary — and long-discontinued — NTI EQ3 from the ’80s, the EQ4 plug-in features Maag’s legendary "Air" Band control, a major component to the vocal mix chain on Madonna’s Ray of Light as well as Celine Dion’s Taking Chances.

Add natural, musical presence to vocals, acoustic guitars, and overheads

Easily elevate top-end without harshness or hiss

Use five-position Air Band control to quickly inject life into dull tracks

Make musical broad stroke EQ moves while preserving original source material

Key Features

Exacting emulation of the Maag EQ4®
Six bands of equalization, including the famous AIR BAND®
Provides unparalleled transparency and top end presence while maintaining the true natural sound of the original signal
The vocal sound of Madonna, Celine Dion, Snoop Dogg, and the Black Eyed Peas
Endorsing producers include David Reitzas, Dave Pensado, and Dylan Dresdow
EQ adjustments are obtained with minimal phase shift
Additional Trim Control (not found on the hardware), for easier level control
Constructed for demanding professional applications
The interaction of the band passes of the hardware has been fully captured in the plug-in version

Customer Reviews

Maag EQ4® EQ

Overall Rating

M. Grodzki

April 11, 2023

Sehr Gut

Kleines Tool und sehr effectiv.

b. carlos

April 10, 2023

Majestad studio HD

Maag EQ4® EQ Es excelente no puede faltar en mis mezcla tiene un sonido magnífico con este EQ el sonido cambio por completo gracias AUD

p. herrington

April 3, 2023

Air Band

Air band ….. All day!

R. Gregor

March 30, 2023

Why did I wait so long?

Such great eq for vocals. That air band!

D. Colon

March 29, 2023

The Maag

This is my go to EQ it’s posted on my vocals chain very happy with it.

O. Cruz-Olivencia

January 2, 2023

Great EQ for vocals

Sounds great on vocals! My go to - easy to use with amazing results.

C. Bors

December 15, 2022

Very simple interface and nice sound

Few knobs, nothing space technology, just works. Must have EQ.

J. Rodney

October 12, 2022


I actually really like this plugins very easy to use give it a great tone

R. Donnelly

October 1, 2022

Review request

The Maag EQ4 is my favourite EQ.


September 19, 2022

Simplemente Maravilloso

Con una personalidad única este pequeño Eq se ha convertido un imprescindible en mis mezclas. En Voces y guitarras acústicas nunca puede faltar.

O. Levi

September 18, 2022

Air bender

40hzk is the real deal, this adds so much openness to my songs.
I love it!

M. Ramos Jiménez

July 19, 2022

The best Air Eq.

I love the Maag EQ Air. I use in the vocals.

A. Keuter

July 7, 2022

Top !!!

Imlike the sound of the Maag EQ4, verry nice

R. Bouma

July 3, 2022

Special tool

With some gear you use it for a special purpose. I’ve been using the MAAGEQ4 from plug-in alliance since day one. Primary for the ultraband only. I thought the algorithm was the same as the UAD version but apparently not. I use this pi every session almost. Vocals or strings it just does the job in 20/40khz version. A standard tool in the box

f. ricky

May 24, 2022

A wonderful tool I use everyday!

Love it immediately when the first time I heard it!! And now I can't leave it~ It's interface,control,quality,and sound are so nice~ Give me some air! And it becomes real~ wonderful~

T. Gardner

April 20, 2022

I love it!!!

I use the maag on every vocal chain to add air to my signal, it's so clean and adds a bit of sonic clarity.

A. Sviridov

March 30, 2022


This is a very nice sounding EQ!

E. Blake

January 21, 2022

Maag is musically lovely

Sure I have the MAAG stereo rack EQ but I use them both.I just love a newer EQ has become a classic.EQs are the most important cog in any mix and this plugin is spot on.Thx UAD Cheers

W. Schurat

January 10, 2022

Amazing Hi End

This EQ looks cheap and sounds expensive. Like it’s original small equivalent. Especially the hi end of the frequency spectrum is unparalleled in any other EQ. The smoothness of the air band is just tasty.

E. Jegu

January 6, 2022

Very Good EQ !

Very good EQ for guitar and vocal.