I never did use earphones until into the Eighties or Nineties. I don't like to use earphones. I've never heard anybody sing with earphones effectively. They just give you a false sense of security. A lot of us don't need earphones. I don't think Springsteen or Mick do. But other people more or less have given in. But they ought not to. They don't need to. Especially if they have a good band.