http://www.premierguitar.com Premier Guitar's Tessa Jeffers is on location in Nashville, Tennessee, where she visits the Earthquaker Devices booth and learns more about their newest pedals - The Depths Optical Vibe Machine and Arpanoid Polyphonic Pitch Arpeggiator.
For more Summer NAMM '13 demos or to watch one of Premier Guitar's 2,000 other videos online, visit http://www.premierguitar.com/video