Used Spaceman Effects Mercury IV Germanium Harmonic Boost Effect Pedal

This used Spaceman Effects Mercury IV Germanium Harmonic Boost delivers rich, touch-sensitive gain with vintage germanium warmth and sparkling harmonic enhancement, perfect for fattening single-coils or pushing an amp into sweet saturation. In excellent condition, it features intuitive Level and Harmonics-style controls for dialing everything from subtle sheen to gritty boost, plus true-bypass switching for a clean signal path. Built rugged for pedalboards, it runs on standard 9V DC power for easy integration.