McIntosh MQ112 Environmental Equaliser


Take control of your sound with the McIntosh MQ112 Environmental Equaliser and spend more time listening to your music.

Available on back-order

McIntosh MQ112 Environmental Equaliser

  • 8-band analogue equaliser
  • Adjust the audio signal at 8 key bands in the 25Hz – 10kHz audio frequency range
  • ±12dB range of adjustment for each band
  • TILT knob for further customisation with subtle tonal balance shift of ±6dB
McIntosh MQ112 angled


The quest for perfect sounding audio in your house can be frustrating as virtually no space in a home is designed with sound reproduction in mind.

This can lead to constantly tinkering with acoustic treatments, changing speaker placement, or even rearranging furniture (which may not go over too well with other members of the household).

Instead of wasting time fiddling with your system or room, take control of your sound with the McIntosh MQ112 Environmental Equaliser and spend more time listening to your music.

In the relentless pursuit of perfect audio, they understand the frustration of adapting your living space for optimal sound reproduction.

With the MQ112, you can make changes to the music itself so that room acoustic problems can be overcome.

The results can be stunning and can make even a great sounding stereo system sound even better.


At the heart of the MQ112 lies an 8-band analogue equaliser (also called a stereo equaliser) that allows you to increase or decrease the levels of the audio signal at 8 key bands in the 25Hz – 10kHz audio frequency range.

Think of it as a sonic sculptor that allows you to finely tune the audio signal.

With an impressive ±12dB range of adjustment for each band, you can easily cope with any sound challenge.

The MQ112 is the solution you need to enhance or subdue particular instrument ranges or voice types, transforming your listening experience.

MQ112 Knobs 02


The McIntosh MQ112 Environmental Equaliser does more than just fix room acoustics; it can also breathe new life into older, imperfect recordings.

With the master precision of the MQ112, you can target specific frequencies, compensating for deficiencies in vintage tracks and unveiling their hidden brilliance.

The TILT knob, with its subtle tonal balance shift of ±6dB, allows you to customise your sound further.

Boost the bass while reducing treble, or vice versa – the choice is yours.

The EQ Control knob’s IN and OUT settings let you bypass the entire equaliser circuit so you can compare the adjusted sound to the original, unaltered version, ensuring you achieve the perfect audio profile.

The equaliser can also be triggered IN or OUT using the rear panel’s EQ Control Trigger, giving you seamless control over when the MQ112 works its magic.

Also, by using one of the programmable triggers in the audio system’s preamplifier, the EQ can be switched IN or OUT depending on input or amplifier choice.

Crafted with precision and versatility, the MQ112 boasts remarkably low noise circuits and minimal distortion, harmonising seamlessly with high-performance audio systems.


Both balanced and unbalanced inputs and outputs are included on the versatile MQ112, making it easy to add it to your stereo system: simply place it between the preamplifier and power amplifier(s) and connect them all together using the inputs and outputs of your choice.

The input type you use does not have to match the output type; for example, you could connect a preamplifier (or another audio component with volume control like some CD Players) via the unbalanced inputs, but then connect the MQ112 to your power amplifier(s) with balanced cables via the balanced outputs.

The MQ112 can also be used with integrated amplifiers, provided the integrated amp has removable jumpers so the preamplifier section can be disconnected from the power amplifier section.

The versatility of the MQ112 is further evident in its second pair of outputs, which opens a world of possibilities for enjoying your music.

You can play the same music through a separate stereo system in another room, bi-amp a single pair of speakers for optimal sound control, or connect a subwoofer for that extra bass punch.

For subwoofers without stereo inputs, the second output on the MQ112 can be set to MONO; two subwoofers can also be connected this way.

In more intricate systems, the MQ112 can be connected through PROCESSOR loops and TAPE MONITOR record/play connections found on many preamplifiers and integrated amplifiers.

McIntosh MQ112 rear


The design of the MQ112 Environmental Equaliser is a testament to McIntosh’s commitment to timeless aesthetics and high-quality materials.

The black glass front faceplate, rotary control knobs, illuminated logo, and custom machined aluminium end caps are signature features of the brand.

The back panel’s Power Control ports allow for seamless integration with other McIntosh components, making it easy to turn the MQ112 on and off with the rest of your audio system.


Rated Output Voltage – 2.5V Unbalanced, 5V Balanced
Maximum Output Voltage – 10V Unbalanced, 20V Balanced
Maximum Input Voltage – 10V Unbalanced, 20V Balanced
Voltage Gain (all controls flat) – Unbalanced: IN to OUT 0dB, Balanced: IN to OUT 0dB
Frequency Response (all controls flat) – +0, -0.5dB from 20Hz to 20kHz, +0, -1dB from 10Hz to 100kHz
Signal To Noise Ratio – 115dB (below rated output)
Total Harmonic Distortion – 0.005% from 20Hz to 20kHz
Input Impedance – 10k ohms Unbalanced, 20k ohms Balanced
Output Impedance – 500 ohms Unbalanced, 1000 ohms Balanced
Equalizer Controls – ±12dB at 25Hz, 50Hz, 100Hz, 200Hz, 400Hz, 1kHz, 3kHz, and 10kHz
Tilt Control – ±6dB at 20Hz and 20kHz, 650Hz Tilt Axis

Balanced Input – 1
Unbalanced Input – 1
Balanced Output – 2
Unbalanced Output – 2

Unit Dimensions (W x H x D) – 17-1/2” (44.5cm) x 3-15/16” (10cm) x 15-11/16” (39.8cm)
Unit Weight – 15 lbs (6.8kg)
Shipping Weight – 29.5 lbs (13.4kg)




McIntosh Heritage Founded in 1949 by Frank McIntosh and Gordon Gow McIntosh is known for offering distinguished home audio systems that deliver the ultimate experience in music and film. Offering products for two-channel stereo sound systems and multi-channel home theaters with surround sound, McIntosh continues to define the ultimate home audio entertainment experience for discriminating listeners around the world. Their iconic blue Watt output meter is globally recognised as a symbol of quality home audio. With a McIntosh home stereo system or home theater, listeners have the ability to create their own luxury audio experience – and truly live their music. McIntosh products are designed and handcrafted at their Binghamton, NY factory by their dedicated employees who share a passion for music and the McIntosh heritage. Since their inception, McIntosh has been powering some of the most important moments in music history and pop culture. From President Lyndon Johnson's inauguration speech to Woodstock to the famous Grateful Dead "Wall of Sound," McIntosh has not only witnessed history, they have shaped it.
Sound is not just a product of what they create; it is the core of their being. Their dedication to its engineering goes beyond performance. It flows through every element of their company and drives our unwavering commitment to sound excellence. Embedded in every aspect of our craftmanship, it is the heartbeat that resonates within our products, connecting music lovers to the soul-stirring power of sound.


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