Guitar Harmonizer Pedals

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A Guitar Harmonizer Pedal is a type of guitar effects pedal which allows you to add additional notes to the signal. It is also known as a "pitch-shifter".

There are two primary uses for the harmonizer. It can be used to add overtones which are already a part of the original note. It can also be used to add a harmony note to the original note.

There are basically three types of harmonizers:


Octave pedals add a note one octave below the original note. This pedal is effective in simulating the sound of a 12-string guitar. If you listen to "Purple Haze" and "Fire" by Jimi Hendrix, you will hear the rock history making effect of Hendrix's own original octaver. The original pedal is enshrined at the Experience Music Project, Seattle’s famous rock and roll museum.

Want to get the Hendrix octave sound? Try this!


The static Harmonizer is similar in effect to that of the Octaver but allows you to select different notes or intervals not limited to octaves.


Most of the static types of Harmonizers are being replaced with the newer "Intelligent Harmonizers". This harmonizer allows you to not only select the number of harmonies you want to add but also what key the harmonies will be generated in. Some even allow you to change the key from which the harmonies are generated in real-time.

You select the key you are playing in, like C Major, D minor etc… and the intelligent harmonizer does the rest. It will track the guitar notes and only produce harmonies that fit in that key.

The most popular Intelligent Harmonizer is this one


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Remember that Harmonizers are just one of a multitude of guitar effect available to you. To check out more effects,

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