The Beta 58A is a top-of-the-line dynamic vocal microphone and the highest quality 58. It is a standard on all stage sizes. The Beta 58A combines Shure's signature presence and punch with more subtlety in sound. It is extremely robust and offers maximum security from feedback. The Beta 58A is a vocal microphone designed for stages of all sizes. Especially on very loud stages, it is a favourite for professional musicians and sound engineers. The consistent supercardioid polar pattern isolates the voice, suppresses background noise from e.g. adjacent instruments and minimises feedback.

The Beta 58A sounds powerful and present. It adds more subtlety to the typical Shure sound, especially in the highs. Even without EQ settings on the mixing console, the singer comes through excellently in the band mix. The SM58 has a cardioid pickup pattern, the Beta 58A a supercardioid pickup pattern - this basically increases the feedback security. The Beta's neodymium magnet has a higher sensitivity for higher output levels and clearer, more brilliant highs. The Beta 58A's hardened steel basket protects even more effectively against damage. A fall from a microphone stand to the floor usually does not even deform the basket.