Zvex Box of Rock - Hand Painted - One of a Kind Special Edition (Skulls) Adapters The LED by the Sample

The LED by the Sample Rate knob shows the key input and coarse/fine modes

switch to half-speed playback

4hp Logo Panel

The ZVex Vextron Mastotron Fuzz is a heavy silicon-based fuzz pedal with a lot of controls like volume

Zvex Box of Rock - Hand Painted - One of a Kind Special Edition (Skulls) Adapters The LED by the SampleThe Box of Rock 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. You may use the Box of Rock effectively with many different amplifiers, but to get the sound I heard when I designed it, try it through a 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