A one-room radio-parts shop in 1925 Chicago turned into the microphone every roadie trusts and every meeting room quietly runs on. Here is how Shure spent a century refusing to go public - or to make a fragile mic.
How a Portland sound engineer's spare-bedroom experiment - taking a pair of earphones apart to build a custom set for his wife - became the in-ear monitor brand touring artists and studio producers trust in more than 90 countries.