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Equalizer

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If the level fader is the right hand of any mixing engineer, the equalizer is the left. The 'EQ' is essentially a set of volume controls for specific sections of the full frequency spectrum, so engineers gain control over the level of the bass, treble, or other, more precise slices of the frequency range. Equalizers are just as essential for live sound as they are for recording studios, and are also used to balance the output of any home audio systems. In fact, your phone probably has an equalizer buried somewhere in your audio settings menu.

The EQ: An Audio Essential

If you're mixing audio, then your first job is to strike a rough balance between tracks with your volume faders. A lot of the time, some instruments will want to get in the way of other instruments by invading one another's frequency range. Using an equalizer, you can precisely adjust the frequency response of each instrument to put all the puzzle pieces together neatly so that nothing gets in the way of anything else. A classic issue is when the bass guitar and kick drum get drowned out to the point where you can barely hear them. Here, you can use the EQ to filter the bass frequencies out of the other instruments to clear space for the bass and kick. Sometimes, you can divide the load between the bass and kick, by assigning one as the kind of 'boss' in the sub-bass at around 50 to 60Hz, and the other as the 'punchy' bass at around 80 to 100Hz. As well as hardware equalizers, you can also get software equalisers in the form of effect plug-ins, which can either be specialised or advanced.

Graphic Equalizers

Graphic equalizers divide the frequency spectrum up into a row of faders which can be used to weaken or strengthen a specific frequency range. More simple models have maybe five faders while more complex models will have anywhere up to thirty-one faders, for the left stereo channel as well as the right. The advantage of using a graphic equalizer is that it gives you a clear overview of any frequency adjustments you've made. The disadvantage is that it can be hard to pinpoint the right frequency to adjust if you don't have a trained ear.

Parametric Equalizers

A parametric equalizer controls one or more 'bands', and each band will be kitted out with a gain and a frequency control. Using the gain control, you can weaken or strengthen a specific band, and with the frequency control, you can select the part of the frequency spectrum you're adjusting. The advantage of a parametric equalizer is that you can easily pinpoint overbearing or lost frequencies by dipping or boosting a band with the gain control before scanning through the spectrum with the frequency control. The disadvantage of a parametric equalizer is that it doesn't offer the clear overview that a graphic equalizer does.

Frequently Asked Questions About Equalizers

What does 'equalizer' mean?

Equalizer means exactly what it says - a chunk of hardware or software that's able to correct and balance the frequency response of audio.

How do you set up an equalizer?

Unfortunately, equalizer presets are rarely any use, so learning to set one up yourself is wise. First of all, your EQ settings will rely entirely on the audio you're working with, so listen closely to the space that each instrument occupies in the whole mix, then weaken the frequencies of the other instruments that might be getting in the way while strengthening any of the frequencies that are getting lost.

How does an equalizer work?

You could see an equalizer as one or more volume controls for specific slices of the entire frequency spectrum. So the bass, middle, and treble controls of your average stereo system are a basic example of an EQ.

How do I connect an equalizer up to my amplifier?

If you want to have control over the tone of the master output of an audio mixer or an audio source like a CD player, then you can connect the master output of the source up to the input of the equalizer. The output of the equalizer can then be connected to the input of your amplifier.

JB systems GEQ215 Dual 15-Band Graphic Equalizer

Gain pro-grade control over your sound with the JB systems GEQ215. This two-channel, 15-band graphic equalizer features balanced inputs, a bypass switch and a 50Hz low-cut function.

In stock
In stock
Order before 10:00pm = receive it on Thursday
Recommended price £128
£107

DBX 215S equaliser

<p>DBX's 215S equaliser provides exceptional sound and real reliability. Professionals that need an equaliser really need to take a look at a DBX.</p>

In stock
In stock
Order before 10:00pm = receive it on Thursday
Recommended price £242
£144
-4%

Drawmer 1971 2-Channel Parametric Equalizer

The Drawmer 1971 Parametric Equalizer supplies two channels, each with four bands: a low-shelf, two fully parametric mid-bands and a hi-shelf. Each band has also been fitted out with a Crush circuit for injecting some sweet saturation.

In stock
In stock
Order before 10:00pm = receive it on Thursday (free)
Recommended price £1,586
£1,425

Omnitronic ISO-23 MK2 DJ Isolator with Boost, Kill-Cut and Bypass

The Omnitronic ISO-23 MK2 3-band DJ isolator injects a regulated mid, low, or high range boost or cut and boasts a convenient 19" rack design.

In stock
In stock
Order before 10:00pm = receive it on Thursday
Recommended price £209
£153

Peavey PV 231EQ 2-Channel, 31-Band Graphic Equalizer

Order now and receive delivery within approx. 6 business days
Order now and receive delivery within approx. 6 business days
Recommended price £290
£237

ART EQ341 2-channel 15-band graphic equalizer

The ART EQ341 2-channel 15-band graphic equalizer enables you to get the best out of your audio by enhancing the frequency contours.

Order now and receive delivery within approx. 8 weeks
Order now and receive delivery within approx. 8 weeks
Recommended price £221
£180

DBX 231S 31-band equalizer (2-channel)

DBX's 231S equalizer provides exceptional sound and real reliability. Professionals that need an equalizer really need to take a look at a DBX.

Order now and receive delivery within approx. 7 weeks
Order now and receive delivery within approx. 7 weeks
Recommended price £254
£164

Cranborne Audio Carnaby 500 Equalizer

Rather than just strengthening or weakening specific frequencies, the Cranborne Audio Carnaby 500 harmonic equalizer creates new overtones, while the three bands grant ultimate control over the saturation level.

Order now and receive delivery within approx. 8 business days
Order now and receive delivery within approx. 8 business days
Recommended price £779
£511

DBX 131S Equalizer

Built to shape audio with surgical precision and packed into a hard-wearing housing, the DBX 131S equalizer guarantees durable and professional performance.

Order now and receive delivery within approx. 7 weeks
Order now and receive delivery within approx. 7 weeks
Recommended price £248
£144

Heritage Audio Symph EQ Stereo Equalizer

The Heritage Audio Symph EQ stereo equalizer has been built to meet mix-bus and mastering demands. This potent EQ wrangler can be set up in L-R and M-S, and provides high and low-shelf filters to clean signals of frequency-based extremes.

Delivery time unknown
Delivery time unknown
Recommended price £1,612
£1,299

Solid State Logic Fusion Bus Processor

The on-board effects chain of the SSL Fusion is made up of a HPF, Drive, De-Esser, Compressor, and finally, a Stereo Enhancer. Add weight and polish up mixes in mere minutes via a clear and tactile control panel.

Delivery time unknown
Delivery time unknown
Recommended price £2,340
£1,369

Warm Audio EQP-WA Tube Equalizer

This is Warm Audio's answer to one of the world's best known and best loved equalisers, the Pultec EQP-1A tube EQ, and the appearance as well as the sound of the EQP-WA more than match up.

Order now and receive delivery within approx. 8 business days
Order now and receive delivery within approx. 8 business days
Recommended price £845
£589

Heritage Audio HA73EQ Elite Preamplifier with Equaliser

Shape and complete your genuinely unique sound with the Heritage Audio HA-73 EQ ELITE. This preamplifier and equaliser is a devotional ode to the renowned Neve 1073 module and creates round, musical sound.

Delivery time unknown
Delivery time unknown
Recommended price £1,030
£799

Cranborne Audio Carnaby HE2 2-Channel Parametric Equalizer

The Cranborne Audio Carnaby HE2 is a 3-band parametric EQ in 2U rack form. A natural evolution of the Carnaby 500 EQ, this equaliser can be used in stereo, dual mono and mid-side configurations.

Order now and receive delivery within approx. 8 business days
Order now and receive delivery within approx. 8 business days
Recommended price £2,759
£1,929

Omnitronic EQ-25 MK2 DJ Equalizer

Order now and receive delivery within approx. 7 business days
Order now and receive delivery within approx. 7 business days
Recommended price £312
£194

ART 355 2-Channel, 31-Band Graphic Equalizer

Enrich the presence and definition of your sound using this ART-made graphic EQ. The 335 provides two channels that can be tweaked in exacting detail using a set of supple sliders.

Order now and receive delivery within approx. 8 weeks
Order now and receive delivery within approx. 8 weeks
Recommended price £397
£312

Peavey PV 215EQ 2-Channel, 15-Band Graphic Equalizer

Order now and receive delivery within approx. 6 business days
Order now and receive delivery within approx. 6 business days
Recommended price £175
£143

Gainlab Audio Empress Stereo Valve Equalizer

The Gainlab Audio Empress stereo valve equalizer didn't just drop from the sky - this is an up-to-date iteration of the most acclaimed EQ of all time: the Pultec EQP-1a. Passive design for supreme, silky smooth results.

Delivery time unknown
Delivery time unknown
Recommended price £2,891
£2,039

DBX 1231 double graphic equalizer

Get your sound exactly the way your want it, and even develop your own sound for your shows and recordings. It's easy with this double 31-band EQ!

Order now and receive delivery within approx. 7 weeks
Order now and receive delivery within approx. 7 weeks
Recommended price £615
£365

API Audio 5500 2x 4-bands equalizer 19" 1U

If you're a perfectionist when it comes to fine-tuning the frequencies, the API 5500 Stereo/Dual Mono Equalizer is a must-have.

Delivery time unknown
Delivery time unknown
Recommended price £5,149
£3,090

Empirical Labs Lil FrEQ EL-Q Equaliser & De-Esser

With their Lil FrEQ EL-Q, Empirical Labs redefine the phenomenon that is the equaliser. Clean up the lows using the hi-pass filter and shape your sound via the four EQ bands while the de-esser keeps the trebles in check.

Delivery time unknown
Delivery time unknown
Recommended price £3,715
£3,609

IGS Audio Rubber Bands passive equalizer

Have you always dreamt about owning a Pultec but weren't prepared to take out a second mortgage to buy one? The IGS Audio Rubber Bands passive equalizer is a great alternative and for high-end studios.

Temporarily unavailable
Temporarily unavailable
Recommended price £2,379
£1,777

DBX 1215 Double Graphic Equalizer

To sculpt a truly personal, 'signature' sound for your (drive-in) shows or home rehearsals, you need a truly comprehensive equalizer. Meet the DBX 1215 double graphic EQ!

Order now and receive delivery within approx. 7 weeks
Order now and receive delivery within approx. 7 weeks
Recommended price £585
£281

Heritage Audio Motorcity EQ Passive Equalizer

Delivery time unknown
Delivery time unknown
Recommended price £2,583
£1,629

API Audio Select SR24 2-Channel Equaliser

The API Audio Select SR24 is an equaliser based on the extremely rare APSI 562. This high-end bit of studio kit comes loaded with two four-band parametric EQs that each offer a 12dB boosting-and-cutting range.

Delivery time unknown
Delivery time unknown
Recommended price £1,681
£1,375

Heritage Audio HA-81a Elite Channel Strip with Preamp and Equaliser

The Heritage Audio HA-81a Elite Channel Strip combines a 73-style preamp with an 81-style equaliser, giving you character-packed sound whether you're plugging in a microphone, a guitar or a bass.

Delivery time unknown
Delivery time unknown
Recommended price £1,180
£1,015

Heritage Audio HA73EQX2 Elite Two-Channel Preamp with EQ

Since the design is directly based on the legendary Neve 1073, the two-channel Heritage Audio HA73EQX2 Elite preamp/EQ packs the credentials needed to bathe your recordings in definitively rich character.

Delivery time unknown
Delivery time unknown
Recommended price £1,813
£1,522

Golden Age Audio EQ-73 MK2 Equalizer

Order now and receive delivery within approx. 8 business days
Order now and receive delivery within approx. 8 business days
Recommended price £416
£299

Golden Age Audio EQ-81 MK3 Equalizer

Order now and receive delivery within approx. 8 business days
Order now and receive delivery within approx. 8 business days
Recommended price £465
£339

Golden Age Audio EQ-73 Premier Equalizer

Order now and receive delivery within approx. 8 business days
Order now and receive delivery within approx. 8 business days
Recommended price £554
£405

Heritage Audio Lang Electronics PEQ-2 Equalizer

The Lang Electronics PEQ-2 is no mere replica of the PEQ-2 passive equalizer - it actually IS the PEQ-2! Thanks to Heritage Audio, this stunner of a solid state EQ is back in production.

Delivery time unknown
Delivery time unknown
Recommended price £1,081
£825

(B-Stock) Solid State Logic Fusion Bus Processor

The on-board effects chain of the SSL Fusion is made up of a HPF, Drive, De-Esser, Compressor, and finally, a Stereo Enhancer. Add weight and polish up mixes in mere minutes via a clear and tactile control panel.

In stock
In stock
Order before 10:00pm = receive it on Thursday (free)
£1,369
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