Guitar Center named Michael Amkreutz Executive Vice President, Marketing, Merchandising and E-Commerce. Amkreutz will be responsible for all aspects of Guitar Center’s product assortment, in-store merchandising, marketing campaigns and e-commerce strategy. Amkreutz joins Guitar Center from Systemax North American Technologies, where he was Chief Marketing Officer. He has expertise in marketing, merchandising and technology that developed over the years at companies such as Sears, Newegg, Hannspree North America and Sharp Electronics. Contact Clyne Media, Inc.