The PGA58 is a professional quality vocal microphone with an updated industrial design that features a black metallic finish and grille offering an unobtrusive visual presence. Legendary Shure quality construction ensures exceptional performance in rigorous environments. The PGA58 is a professional quality vocal microphone with an updated industrial design It features a black metallic finish and grille offering an unobtrusive visual presence. Legendary Shure quality construction ensures exceptional performance in rigorous environments.