Jen Majura, Gretchen Menn, Tina Guo: set for ENGL amps NAMM 2017! on January 12, 2017 Get link Facebook X Pinterest Email Other Apps Engl Amps Don't miss the signing session of these gorgeous ladies! ENGL endorser Jen Majura Official /Evanescence, Gretchen Menn and Tina Guo! Saturday, January 21st at NAMM 2017! Booth #5824