Part of their Obsidian series, the Monument harmonic tap tremolo V2 effects pedal from Walrus Audio features a smaller-than-typical form factor with top-mounted jacks, assignable expression control and rate ramp up. The side jack also features expanded capabilities, such as the ability to support external tempo or function as expression control over Rate, Depth, Shape or Tap Multiplier. This effects pedal solution is inspired by the jagged, red-sand desert landscape of Monument Valley by producing both harmonic and standard tremolo that produce a rich, luscious and warm pulsating modulation capable of peaks and valleys.