Shure SM58

The Shure SM58 is a professional cardioid dynamic microphone, commonly used in live vocal applications. It has built an enviable reputation among musicians for its robust construction and technical performance, and is considered the industry standard for live performance microphones. Introduced in 1966, the SM58 remains one of the best selling microphones in the world today. The SM stands for Studio Microphone.

The SM58 has a mid-bass frequency boost common to all cardioid microphone designs when used close to the source. The cardioid response reduces pickup from the side and rear, helping to avoid feedback onstage. It uses the balanced XLR 3-pin connection. There are wired (with and without on/off switch) and wireless versions. The microphone has a frequency response from 50 Hz to 15 kHz. The SM58 uses an internal shock mount to reduce handling noise.

While the look and intended applications are similar, the Beta 58 and Beta 58A have little in common with the SM58. The Beta series uses a different capsule and transformer from the SM series. The Beta 58A has an extended frequency response and it is also super cardioid instead of cardioid giving improved side rejection.