The Distortron is more than just a little sister to the box of rock pedal. This pedal has three sub options that allow you to customize your low end tone (thickness in the overall tone) using a 3-way toggle. 3 is the thickest and 1 is the thinnest. There is also the lo and hi gain settings from a 2-way toggle that are nice when you want options for rhythm and lead tones. We find these functions make this pedal truly versatile.
The Distortron is the gifted little sister to the Z.Vex Box of Rock. It is highly specialized to simulate the everything on 10 sound of a classic Marshall JTM45 non-master-volume amplifier. You may use the Distortron effectively with many different amplifiers, but to get the sound I heard when I designed it, try it through an old-school non-master volume Marshall at least once. You may use your guitar's volume control to adjust for the exact amount of distortion you need, all the way down to very clean and clear with most drive settings when the gain switch is set to Lo.