The perfect preamp pedal! The ZVEX Super Hard On is so transparent that no one will be able to tell you're using a pedal. The “Crackle Okay” volume knob is a negative-feedback control styled after classic 60’s recording console inputs (which also crackled when turned). Perfect for making the most of a classic amp and guitar, because it simply makes your guitar bigger and pushes the amp harder, causing natural overload. One of the pleasing sonic characteristics of this pedal is a restoration of the sparkling high frequencies that are be lost in cables. The output level can exceed 8 volts peak, and when it finally distorts, the wave is shaped like triode overload, not fuzz.
Like all Z. Vex designs, this pedal is true-bypass, with current flow very low in this circuit (about 2mA), enhancing battery life. The box is hand-drilled using no petro lubricants. Knobs are Harry Davies, made with the same molds they’ve used since the fifties.