 The final name came from the tiger inlaid on the preamp cover located on the guitar's top, just behind the tailpiece.The body features several layers of wood laminated together face-to-face in a configuration referred to as a "hippie sandwich" by employees of Alembic Inc., where Irwin worked for a brief period in the early 1970s.The combination of several heavy varieties of wood, plus solid brass binding and hardware resulted in an unusually heavy instrument, weighing .