No one does bucket-brigade effects like Electro-Harmonix and with the Eddy you get lush EHX vibrato and chorus in a compact, pedalboard friendly package with unique control options. The Eddy gives you envelope and expression pedal control over modulation rate and depth. That means you can control either with your playing dynamics. Plus, if you plug in an EXP pedal, you can use it to control the rate or depth at the same time.