Jazz guitarists do use pedals. A pedal is a device that modifies the sound of an electric guitar. They are placed on the floor and can be activated by pressing a switch with the foot. Pedals can be used to add effects such as reverb, distortion, delay, and more to the sound of the guitar.
There are many types of pedals that are commonly used by jazz guitarists, including reverb pedals, delay pedals, chorus pedals, and overdrive pedals. Reverb pedals create the illusion of sound being in a large room or hall, adding depth and dimension to the sound of the guitar. Delay pedals repeat the sound of the guitar after a specified amount of time, creating an echo effect. Chorus pedals produce a slight variation in pitch, creating a thicker, more layered sound. Overdrive pedals create a distorted sound that can be used to add edge and drive to solos.
Jazz guitarists often use pedals to add effects to their solos, making their playing more expressive and interesting. For example, a guitarist might use a delay pedal to create a sense of space around their playing, or an overdrive pedal to add some grit and bite to their sound. Pedals can also be used to create unique sounds that are not possible with just a guitar and amp. For example, a guitarist might use a combination of pedals to create a sound that is similar to a saxophone or trumpet.
In conclusion, jazz guitarists do use pedals, and they play a crucial role in shaping the sound of the guitar in jazz music. Pedals allow jazz guitarists to add depth, dimension, and character to their playing, making their solos more expressive and interesting. The use of pedals is an important aspect of jazz guitar technique, and many famous jazz guitarists, such as Pat Metheny and John McLaughlin, have relied heavily on pedals in their playing.