We are excited to present the Mercury IV, a unique Germanium Harmonic Boost pedal. Eight years ago, we introduced the Mercury III and we have updated the original circuit for a new spin on that classic pedal.

The Mercury IV is a dynamic tone enhancer, created to bring out additional harmonic character from instruments and amplifiers. The pedal features a unique, discrete analog circuit, with a meticulously selected vintage germanium transistor at its heart.

The Boost control of the Mercury IV offers a staggering 35 dB of gain, with nine (9) tone-shaping options via two toggle switches, to gently or aggressively boost tube amplifiers. The real magic however, resides in the Harmonics control; bringing more dimension and life to ones’ tone. Subtle sparkle, complex textures, and octave-like overtones can all be found here. With a sound and response like hot tubes on the edge of breakup, these even-order harmonics are independently generated, giving you full control over the mix.

The Mercury IV is completely hand-soldered and handmade in Portland Oregon to the highest degree of quality possible. These are truly artisan-crafted tone devices, sparing no detail within or without. The Mercury IV utilizes true-bypass switching via the heaviest duty mechanical footswitch available, while your tone is transferred via quality open-frame Switchcraft jacks. Open one up and you’ll see an unparalleled display of craftsmanship; with immaculate hand-soldered PCB, detailed military-spec wiring, and custom Spaceman heavy-duty battery connector. On top of the cast aluminum enclosure sits a durable, engraved vinyl faceplate and jewel indicator light. This pedal is truly built to last a lifetime.

Each pedal number is hand-hammered on the nameplate, stating its limited availability and each is also signed and numbered on the inside.

The first run White, Brass Metallic, Chrome and Copper Editions feature germanium transistors from the same vintage stock as the original Mercury III