Reverb.com is an online marketplace for new, used, and vintage music gear. It was founded in 2013 by David Kalt, shortly after he purchased the musical instrument store Chicago Music Exchange and became frustrated with then-available options for buying and selling guitars online. It has grown into a multimillion-dollar business with more than 10 million monthly visitors and $47 million in funding. In August 2019, Reverb.com was acquired by Etsy for $275 million.