Z-VEX

Box of Rock

2007

The Box of Rock (TM) is Z.Vex Effect's first "distortion" pedal, highly specialized to simulate the "everything on 10" sound of a classic Marshall ® JTM45 non-master-volume amplifier.
The Box of Rock also contains an extremely high-headroom, unity-to-50X gain booster with nominal input impedance and low hiss. It is very similar to the Super Hard On boost circuit, with refinements to make it sound more like a standard amp input and less glassy.