ETR420G Trumpet (Lacquer Brass) Andreas Eastman trumpets are made to bring a professional sound and feel to all levels of trumpet playing. The Eastman process of trumpet making takes great care to blend both technology and the hands of skilled craftspeople. Eastman's proprietary bell spinning process produces a graduated bell thickness that gives the player a professional sound. Hand lapped valves further the professional features of Andreas Eastman trumpets.The artistic engraving on the Andreas Eastman trumpet utilizes the latest technology in a diamond tipped engraving process.