The Structure of the Electric Guitar
The purpose of effectors
Major types of effectors
There are many types of effectors. Below are brief explanations of some of the major effectors available.
The role of equalizers
Equalizers are a type of effector that generally increase (boost) or decrease (cut) certain frequencies in sound. Graphic equalizers feature rows of sliding knobs that correspond to each frequency, while parametric equalizers boost/cut certain frequency bands. When someone is talking about an "equalizer" then are more often than not talking about a graphic equalizer.
Instruments feature built-in equalizers (tone controls), but-with the exception of active type controls-these only cut treble, and are unable to boost at all. Guitarists therefore use effector-type equalizers to gain finer control of their sound.