Maag Audio EQ4M

2-channel 6-band Mastering EQ with Minimum Phase Shift and Air Band
Maag Audio EQ4M image 1
Maag Audio EQ4M image 1
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A Mastering EQ like No Other

Maag Audio's EQ4M mastering equalizer is a no-compromise dual-channel, 6-band unit that works differently than other EQs you've likely used, with ultra-wide-range control from the subsonic, well into dog-frequency territory. The EQ4M's six bands, which include Maag's acclaimed Air Band, start with Sub, a +15dB/-4.5dB bell curve fixed at 10Hz - Maag's nod to the LF realities of modern digital recording. Moving up, you have the same (+15dB/-4.5dB) bells fixed at 40Hz, 160Hz, 650Hz, and 2.5kHz, whereupon the EQ4M's Air Band takes over. Air Band gives you boost-only (+15dB) shelving at 2.5kHz, 5kHz, 10kHz, 15kHz, 20kHz, or 40kHz. Owing to the transitional slope, frequencies below the shelf peaks are affected as well.

Maag Audio EQ4M at a Glance:
  • The EQ4M back story
  • Minimum phase shift preserves the integrity of your material
  • Bandpass interaction is key to the EQ4M's magic
  • Bandpass interaction, part 2
The EQ4M back story

It was 1993 when Cliff Maag rocked the audio world with his NTI EQ3, which featured the unique Air Band. Regarded to this day as one of the most musical EQs on the planet, the EQ3 was a 2-channel, 6-Band EQ in a 19" rackmount form factor. Flash forward a couple of decades, and Maag Audio captures the sonic magic of the EQ3 in the EQ4M, which features, in the company's words, "More power, more headroom, and more control than ever before." Sweetwater mastering engineers using the EQ4M hail it as an end-of-chain shaper/enhancer par excellence.

Minimum phase shift preserves the integrity of your material

Due to its unique design, phase shift is kept to a minimum in the Maag Audio EQ4M. This lets you preserve the integrity of your material and enhance the airiness of the recording, while shaping the tonality from top to bottom. The Air Band, in conjunction with the absence of phase shift, makes the EQ4M perfect for any signal that needs shaping.

Bandpass interaction is key to the EQ4M's magic

The bandpasses in the EQ4M interact with one another. If you increase the Air Band gain, you'll also, to a small degree, increase your overall gain. This ensures the integrity of the sound and is an intended consequence of the design stemming from the summing (interaction) of the Air Band with the other bandpasses. To compensate for any additional gain, simply back down the Input Attn knob and your EQ will maintain its shape.

Bandpass interaction, part 2

Looked at another way, if you're boosting a particular frequency, consider backing down level on neighboring bandpasses above and/or below. Because the bandpasses interact with one another, this behavior is quite a bit different than your typical EQ. Once you get used to how the bandpasses and the Air Band interact in the EQ4M, you'll be able to quickly shape your sound and achieve stunning high-end presence and transparency, all the while remaining faithful to the true sonic nature of your source.

Maag Audio EQ4M Features:
  • No-compromise dual-channel, 6-band mastering equalizer
  • 6 bands of sound-shaping control from 10Hz-40kHz
  • Frequency response: 10Hz-75kHz (-2dB)
  • Headroom: +29dBu at 10 kohms, +28.5dBu at 600 ohms
  • Rides on ultra-clean +/-18-volt rails
Shape and open up your tracks with the Maag Audio EQ4M!

Additional Media

Signal Processing Buying Guide

Tech Specs

Number of Channels 2
Inputs 2 x XLR
Outputs 2 x XLR
Number of Bands 6
Q Type Fixed
Boost/Cut Range +15 dB, -4.5 dB
Frequency Response 10 Hz-40kHz
Freq Range High 2.5-40kHz
Freq Range Hi-Mid 650Hz
Freq Range Mid 160Hz
Freq Range Lo-Mid 40Hz
Freq Range Low 10Hz
Rack Spaces 1U
Height 1.75"
Width 19"
Manufacturer Part Number EQ4M

Customer Reviews

Based on 1 review
Write your review

Crazy good.

SO glad I got this EQ - it's clear and sounds absolutely fantastic. The bands are very well thought out, and have made every instrument (and vocal) I've put through it sound incredible with either a light touch or a heavy hand. The only thing missing in my opinion is an on/off switch on the front panel, it can be a bit difficult to reach around behind the rack to turn it off when not in use for a while... definitely not a deal breaker though! Maag gets extra cool points for putting the power indication LEDs in the ÚÚ's above the first 'a'... super nice touch. Great company and an awesome piece of gear, this thing really punches up the quality of my mixes.
Music background: guitar, synth, post production, sound design
See also: Maag Audio, Maag Audio Mastering, Maag Audio Parametric EQ