4% The gift card may be used to make purchases at any Guitar Center location nationwide. Guitar Center is the nation's largest music instrument retailer offering guitars, amps, drums, keyboards, music software, p.a. gear and recording equipment. They have more gear than you ever thought imaginable-from the classic vintage pieces to the latest cutting-edge technology (and yes, they do encourage their customers to try them all out). Guitar Center - a strong link between musicians and the tools of the trade.