ProCo Sound SOLO Analog Distortion Stomp Box Pedal

The ProCo Sound SOLO is built for guitarists and working musicians who need a single pedal capable of covering the full gain spectrum without sacrificing touch sensitivity or tonal character. Whether running into a clean solid-state amp or a cranked tube head, the SOLO adapts to the rig rather than imposing its own voice, making it a reliable tool for touring players, session guitarists, and live production setups where consistency matters.

At its core, the SOLO uses three pairs of carefully mismatched clipping diodes to produce asymmetrical clipping that closely mirrors the behavior of a tube amp in natural power tube saturation. The hot, melt, and burn modes — selected via a front-panel slider switch — give players access to distinct gain characters without the need for multiple pedals on the board. The interactive scoop and tone controls further shape the midrange and frequency balance, providing usable tones across a wide range of guitars and playing styles, from articulate chord work to sustained lead lines.

The 100% analog signal path and true-bypass switching ensure that when the pedal is disengaged, there is zero coloration of the source signal — a non-negotiable for engineers and players who protect their dry tone. Housed in the same indestructible steel enclosure that defines ProCo stomp boxes, the SOLO is built to withstand the demands of nightly use on stage or in the studio, distinguishing it from boutique alternatives that prioritize aesthetics over durability.