EarthQuaker Devices Pyramids Stereo Flanging pedal is the pinacle of modulation technology. With 5 presets, 8 flanger modes, variable mix, negative feedback, positive feedback, multifunction modify control, tap subdivision, and a tap tempo (WOW). The Pyramids uses the same exact DSP technology as their groundbreaking "Avalanche Run" delay and reverb pedal. If you're looking for Gilmour shimmer, pulverizing space lazers, and everything in between, this is the transdimensional machine you're looking for.