Steinberg designed the sound system for both the Off-Broadway and Broadway runs of Hamilton. His past sound design credits include Hamilton writer/star Lin-Manuel Miranda's first, TONY-winning musical In The Heights, as well as TONY winners Avenue Q and Monty Python's Spamalot, among others. He is responsible for choosing, setting up, and making sure every piece of equipment that will enable the Hamilton audience hear the show works, including but not limited to all 172 speakers in the Richard Rodgers Theatre, the wireless microphone every cast member wears (Miranda and co-star Leslie Odom Jr., who plays Hamilton's political rival Aaron Burr, each wear two for redundancy), the 61 inputs that feed the musicians' output into the system, and all of the show's pre-recorded sounds. Crystal's job is to help implement Steinberg's vision. He also programs and wires many of the devices of the sound system, helps the running crew with any issues they may have, and provides ongoing support to the show.