Check out the renouned John Mayer's tone secrets with the Dunlop WHE701. Twist the delay knob on this Dunlop guitar effect and it takes you from a tight 20ms delay to a cavernous 300ms. Moreover the feedback control option on this Dunlop delay effect pedal regulates the delay duration and intensity, allowing you to focus on your music. Set a balance of mild to wild between dry and delayed signal using the blend knob on this Dunlop guitar effect. The 9V DC optional Power supply on this Dunlop delay effect pedal for its different control options assures you of a crystal clear high quality sound output. The Dunlop WHE701 with all the spooky mysteries of the vintage analog display is sure to cast a spell on its audience.