EarthQuaker Devices Hummingbird V4 Repeat Percussions Tremolo PedalEarthQuaker Devices Hummingbird Repeat Percussion tremolo is a killer sounding tremolo modeled on the vintage repeat percussion unit and similar to those found in old Valco and Vox amplifiers. This awesome Earthquaker device can deliver a wide array of sounds with everything from classic 50s style shimmering tremolo to a synthy, delay like chop that turns your signal into a burst of short pings and on through to near ring modulation speeds. Simply