The Shure SM7dB is an updated version of the classic SM7B microphone, with the addition of a built-in preamp. This eliminates the need for an external preamp, making it ideal for podcasters and musicians who want a convenient and high-quality microphone. The SM7dB retains the classic warm and natural tone of the SM7B, and it includes a detachable pop filter and a larger close-talk windscreen for improved noise reduction. With its rugged construction, versatile performance, and affordable price, the Shure SM7dB is a great choice for anyone who wants a professional-quality microphone.