The Koss "Go to the Devil" vintage button features a bold red-and-black psychedelic graphic promoting one of the company's memorable headphone advertising slogans.
Dimensions: 3.5 x 3.5 x .25 inches
LONG LIVE RETRO TECH – LONG LIVE RETRO TECH – LONG LIVE RETRO TECH – LONG LIVE RETRO TECH –
