Avalon AD2055

Avalon AD2055

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AD2055, Parametric EQ from Avalon.

5 user reviews

Avalon AD2055 tech. sheet

  • Manufacturer:Avalon
  • Model:AD2055
  • Category:Parametric EQs
  • Added in our database on: 01/17/2003

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Avalon AD2055 user reviews

Average Score:5.0( 5/5 based on 5 reviews )
 4 reviews80 %

moosers's review

Avalon AD2055
The Avalon AD2055 is a dual channel parametric EQ.  It can be used either in stereo mode, or as two mono channels.  The AD2055 has XLR inputs and outputs and is indeed a rack mountable unit that will take up two rack spaces.


The make up of the Avalon AD2055 parametric EQ is pretty easy to follow.  Each of the two channels each has four bands of equalization.  The low and high bands have parameters for frequency and gain, while the two middle channels have the same as well as a width parameter.  If you've got any experience with parametric EQs, or know how they work, I believe that you'll be able to catch on quickly as everything should seem pretty self explanatory to you.  For this reason, I've never needed to look at the manual and don't believe that one is necessary.


As far as parametric EQs go, the Avalon AD2055 has a top notch sound quality.  It can be used for any and all applications as this is a versatile piece of equipment that is able to adapt to most situations.  Since the inherent tone quality is clean and the EQ does its job extremely well, this should apply to everything from vocals to guitars to drums, all of which I have tried the AD2055 with.  The unit is simply a great sounding EQ, which like all good EQs, can be used for any application that you would like to use it with.


While expensive, the Avalon AD2055 is aimed for those who are looking for a top tier stereo parametric EQ, regardless of price.  For this reason I can't say that I would recommend this to home studio owners, but for professionals this would be a great choice for a stereo EQ.  It is built extremely well and is a unit that should last a very long time as long as you treat it properly.  I have no complaints about the Avalon AD2055, as they are a company that I trust and this is a unit that is made with the utmost of quality...

blackle's review (This content has been automatically translated from French)"The hills of Avalon"

Avalon AD2055
analog equalizer using discrete components instead of endless integrated circuits. The reason? It is simple and as old as the audio industry: The musicality. Avalon, only this type of circuit operating in class A is not able to degrade the musical signal. Sterile debate some think, and they will not completely wrong, because while only the result counts ..

Going back to AD 2055, it is an equalizer with three separate EQ sections, according to the frequency bands. The severe and acute sections not distinguish a frequency selection switches by ten positions, 18 Hz to 450 Hz for the first and 1.5 kHz to 25 kHz for the second. These selectors switch passive components, according to a long abandoned by almost all manufacturers because of its prohibitive cost of setting out method.

A light control reduces bandwidth corrected (Peak or Shelf for English) and amplitude adjustments are made using potentiometers in a range of + /-24dB for the low section and + /-20dB for acute, this relatively unusual excursion has been retained for psychoacoustic reasons to offset the loss of sensitivity of the auditory system in these frequency bands.

The central section is divided into two bands which partly overlap of 35 Hz to 450 Hz for a 160 Hz and 2 kHz for the other. The settings are well enteudu by potentiometers, and are available for each band of a frequency multiplier (x10). The amplitude can vary from less than 16 to more than 16dB, and the corrected bandwidth (Q-factor) is continuously adjustable. Finally in 2055 AD has a bypass.

As any material vocationally oriented I / O are obviously symmetrical XLR.


The layout of controls is very ergonomic, particularly the level settings to center detent, it may seem obvious but all the machines do not offer it. All level controls are arranged in a line in the upper part of the front panel, which allows you to view a glance if the unit is in linear position.


The first observation by engaging all equalizers settings amplitude 0, is that the machine is completely and permanently transparent, no signal degradation, no audible difference.
For treatment with various modulations, such as taking voice, acoustic and electric guitars, taken battery and finally a finished mix. We note that the fast sections 2055 pads have a different personality from the dual midrange section. In the grave, but rather a correction after all "soft" but however powerful, can be used to correct a track or outright to give a little air mixing by boosting (moderately) the extremely serious. I find this perfectly Avalon to his case and provides deep bass, natural, a hundred leagues from some digital equalizers.

Acute section is also amazing and it never seems artificial produce sound forced, it is possible to give the shiny brass, or remove the side too aggressive a mix with ease. These two sections studs in fact prove very effective when it comes to beautifying a sound, working globally, but however it is certainly not a surgical tool.
on the other hand where the Avalon is surprising is using two strips of medium. The approach here is totally different because all settings are continuous: amplitude, frequency and bandwidth, in short, a true parametric, we would be trying to say. Yes, but it is a rather peculiar temper. Corrections are very precise, and decked out in a sibilant, eg voice, it only takes a few seconds to locate the offending frequency, setting Q to narrow, it only has to scan the band considered for "catch" literally right frequency. With some other bikes that may be less simple .. another example? Transforming a cymbal small sharp needle is a breeze, but (it's useful) change the stamp hobby, change its sound color at all.

This medium AD2055 section has a rare intervention power without sacrificing ease of adjustments, corrections or musicality.


That we want to solve a problem or to change the look of a sound signal, anything goes with this Avalon. I think compared to many equalizers, quality, accuracy and effectiveness of corrections obtained can go to none, and the offering of the EQ sections with very different sound character, but overlapping against each other makes the highly versatile machine. Its direct competitors are named Focusrite or GML it complements beautifully.
Especially since as mentioned above, to top it all, the layout and spacing commands make 2055 a very nice tool to handle.

It is certainly a luxury solution for these times, but it is also extremely comfortable and durable solution. It is also a beam quality that all will not need with a price accordingly .. the rest is above all a story of choices and therefore belongs to you .. if as a buyer the potential profitability of such a tool you seems assured, so do not deprive yourself of this equalizer off Standards.

Norty's review (This content has been automatically translated from French)" magic!"

Avalon AD2055
EQ analog dual mono 2U.


Easy to use, no manual ut but frankly there is no need.


Magic, this is my first real studio EQ and this is just amazing with the different plugins, you go tell me normal but even when I did not think it was this point, it's amazing!

I spend everything I want in modif and each time it's magic.
Brings the high end air, and serious side gives this well-rounded very heavy, beautiful.
Coupled to a good master compressor is THE most ca be asked to mastering.

made on whether it is a dual mono is very convenient.


Pros: SOUND!, Dual mono, separate the power supply.

The -: ca heats a little money but good big sound and comes at a price of € 1,800 occaz is already more reasonable.

fabrice.fargues's review (This content has been automatically translated from French)

Avalon AD2055
Eq analog lamp. It lends an ear, turn buttons, computer publishing?? not for him
Anyway, we buy this kind of stuff to get to the superior sound dimension, something that computers do not yet ....


You know how an EQ?? This one is like the others ... and look what ....


The voice used on the leads, behind a CL1B, just to get some air to the vote ... It's magic, just ... And mastering, behind a massive passive in Manley, Manley for the middle of the spectrum (which sound !!!!) and mediums on the Avalon to the extremes that it is more "delicate" matter of taste .. ..


This is an excellent EQ, one of the very best, there's no doubt, with extreme acute beautiful, it gives one side to the airy music that suits me perfectly ... At this level of "perfection", saying that eq is better than the other has no value, because these devices "high end" all have their strong points and in different situations it is better to use a such and such rather than this one ... The AD2055 is beautiful and suits me fully in the uses mentioned above, it is a classy device, like the entire range of Avalon rest, which does everything expected of a good EQ, and some things better than everyone ... A must have high-end, obviously with a check result, but it gives more to our work ...

Avalon AD2055 images

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  • Avalon AD2055
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  • Avalon AD2055

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Other names: ad2055, ad 2055, ad20 55, ad 20 55

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