The ZVex Distortron guitar pedal is the gifted little sister of ZVex's 'Box of Rock' stompbox. ZVex designed the Distortron distortion effect to simulate the 'everything on 10' sound of a classic Marshall JTM45 non-master-volume amplifier. With the Distortron pedal your guitar's volume control adjusts for the exact amount of distortion needed—all the way down to the clean and clear sounds you can get with most drive settings when the gain switch is set to low.