"True" reverb is the reflection of a sound hitting any hard surface and coming back to you. Back in the day, huge gold or silver plates were used to create reverb sounds in a studio, now, you can get some of the most amazing, lush sounding reverbs just from a pedal. From sweet "amp-like" tones, to massive ethereal black holes, Reverb can be used in many ways to bring a deeper dimension to your tone.