In the words of JHS Pedals: The JHS Pedals 3 Series Reverb is an extremely versatile unit that allows you to create the perfect amount of space for your guitar. You can achieve any reverberation effect, all the way from small room soundsto nearly endless washes of ambiance. The EQ lets you perfectly adjust for a bright or dark texture to the reverb’s overall tone. The Pre-Delayknob allows you to select a short delay before the reverb begins. This lets you explore effects ranging between slap-like singing in the showersounds and spacey spring-like sounds.