MeldaProduction MEqualizer free EQ plug-in: features and spec-based rating

MeldaProduction’s MEqualizer is a free six-band EQ. Each band offers seven kinds of filter, and it includes tube saturation (a faint distortion, as if passed through analog gear).

An EQ (equalizer) adjusts the amount of low and high frequencies in a sound. You use it to clear up a muddy voice or reduce sounds that hurt the ears.

In this article we compare MEqualizer with 15 EQ plug-ins and rate how well it serves its purpose on three criteria. The basis is official manufacturer information.

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Image: from the MeldaProduction official website (product image)

Summary

Among the 15 EQ plug-ins, MEqualizer is rank B. The ranks run S, A, B and C, and B is third from the top. Averaging the scores for each criterion (out of 5, with the one criterion that matters most for the purpose counted double) gives 2.8.

Strengths

• Stereo processing (5 points): you can adjust the center vocal and the backing track spread to the sides separately.

Things to keep in mind

• Handling problem bands (2 points): it has no function that reduces problem sounds automatically; it centers on basic tone adjustment.
• Speed (2 points): you have to decide the settings by ear.

Who it suits: people who want to try an EQ with an analyzer (a function that shows the amount at each pitch as a graph), for free.

Main features of MEqualizer

A six-band EQ you can use for free

MEqualizer is a six-band EQ included in MeldaProduction’s free plug-in collection (MFreeFXBundle). For each band you can choose the filter shape (bell, shelf, low cut, high cut, notch and more) and adjust it just by dragging points on the graph. It suits learning the basics of EQ without spending money.

An analyzer and a sonogram let you check the sound by eye

Besides an analyzer that shows the amount at each pitch, it has a sonogram that shows pitch over time in color. There is also a function that finds the most prominent pitch, so you can look for “where it sticks out” by eye. For a free EQ, it shows a lot of information.

Separate processing of center, left/right and even surround

Besides ordinary stereo, it handles Mid/Side, which separates the center sound from the sound spreading to the sides, separate left and right processing, and even surround and immersive audio (Ambisonics). Of the 15 EQs we compared, its stereo-processing score is the highest, 5. It helps when you want to adjust the vocal in the center and the spread of the backing track at the sides separately.

Tube-style coloration, and level matching

It includes saturation (a faint distortion) that adds the warmth of passing through a tube, so you can color the sound as well as clean it up. It also has a function that automatically matches the level before and after processing, which prevents the mistake of thinking something sounds better just because it got louder.

Where it is useful

• Trying EQ basics, such as cutting the muddiness of a vocal, without spending money
• Looking for the pitch that stands out too much while watching the analyzer and sonogram
• Brightening only the side spread of the backing track and adjusting it separately from the vocal in the center

Rating by criterion

Handling problem bands: 2 / 5

We check whether you can target and fix only the sounds that bother you, such as boominess or harshness.

It is a static six-band EQ.

If “handling problem bands” matters most to you, Pro-Q 4 (5 points) is a better fit.

Speed: 2 / 5

We check whether it has features that get you to a good setting quickly, such as automatic settings and a function that matches a reference sound.

It has an analyzer. It has no automatic setting or other aids.

If “speed” matters most to you, smart:EQ 4 (5 points) is a better fit.

Stereo processing: 5 / 5

We check whether you can adjust the center sound (such as the vocal) and the sound spread to the sides separately.

The official feature list mentions M/S (separate processing of the center and the sides), separate left/right processing and surround support up to 8 channels.

How we score (EQ plug-ins)

Criterion	Basis	5 pt	4 pt	3 pt	2 pt	1 pt
Handling problem bands	The power to target and reduce boomy or harsh sounds	Dynamic EQ, plus processing that reacts only to specific frequencies inside a band	Dynamic EQ (works only when the sound gets loud), or separate processing of the attack and the sustained sound	A static EQ with many bands, or with a choice of processing quality such as linear phase	A static EQ with few bands	—
Speed	Features that help you decide settings quickly	AI balances the sound automatically and can also reduce overlap between tracks	Automatic EQ settings or EQ match, plus other aids	One aid, such as EQ match	Analyzer (a visual display of the sound) only	No aids listed
Stereo processing	Whether the center and the sides can be processed separately	Supports M/S, separate left/right and surround	Supports M/S plus either separate left/right or surround	M/S only	—	Not mentioned on the official page

Each criterion is scored from 1 to 5 on how well the product serves one goal: balancing the sound of vocals and backing tracks in a mix. Scores follow the conditions in the table above, and the rank is based on an average in which "Handling problem bands" counts double. The basis is official manufacturer information. Sound quality and CPU load are not measured, so they are not scored; reviews from trade magazines are introduced in the articles for reference. Price is not part of the score. Features that cannot be confirmed from the manufacturer's or a retailer's description are scored as if absent. The "OBS (streaming)" column in the table shows whether the official page lists the VST2 format that the streaming software OBS Studio can use (○). OBS does not support the VST3 format. It is not part of the score.

MEqualizer screens and images

Image: from the MeldaProduction official website (product image)

MEqualizer system requirements and getting started

Operating system	Windows (64-bit) / Mac (64-bit)
Plug-in formats	VST, VST3, AU, AAX
Other	Can be activated without a USB dongle or an internet connection (license-file method)
Free version	Free (included in MFreeFXBundle)
OBS (streaming)	Works as it is (VST2 is listed)

Checked on the manufacturer’s official pages on September 27, 2026. How to use plug-ins in the OBS streaming software is explained in How to use VST3 plug-ins in OBS.

Compared with other EQ plug-ins

Click a heading to sort. On a phone, the table scrolls sideways.

Read next

• F6: features and rating (rank B)
• Gullfoss: features and rating (rank B)
• Pro-Q 4: features and rating (rank S)
• smart:EQ 4: features and rating (rank A)

For free options

Pages about free products in this category:

• Free EQs compared
• TDR VOS SlickEQ
• Voxengo SPAN
• Kilohearts Essentials
• Blue Cat Audio’s Freeware Plug-ins Pack II
• Free plug-ins for music production