The Shure 520DX, more commonly known as the "Green Bullet" gives you a professional dynamic harmonica microphone. Holding a renowned spot in history as the definitive blues harp voice. Sporting a signature green and chrome die-cast casing, the Green Bullet can be held comfortably behind your harmonica. What's more, the 520DX Green Bullet also has a convenient volume knob at the base of the microphone. Allowing you to easily make volume adjustments as you need during live harmonica performances. There's another standard 1/4" plug that allows the microphone to be connected to a high-impedance device. Above all, the 520DX Green Bullet has long been a recommended harmonic mic by blues bands and engineers. Offering a great harmonica sound, or even to record distinctive lo-fi vocals.