Bumpboxx sent him customized home and road versions. For the next game, Kray hoisted the boombox on his shoulder and led the team onto the field. “We created our own party,” he said.

With a design that screams nostalgia and functionality that nods to modern needs, this is the boombox the 17-year-old me would’ve obsessed over. Hoist it onto your shoulder, pop in a cassette or ...