With its signature green and chrome die-cast casing, the 520DX "Green Bullet" holds a spot in history as the definitive blues harp voice. The 520DX features a volume control knob at the base of the microphone that allows users to make adjustments to suit their needs during live performance. An attached cable with a standard 1/4-inch plug allows the microphone to be connected to a high-impedance device. Contoured to fit perfectly between harmonica and hands, it can also be used for distinct, lo-fi vocals.ype Dynamic Frequency Response 100 to 5,000 Hz Polar Pattern Omnidirectional lmpedance High, unbalanced Cable Length 20 ft (6.1 m) Cable Style Two conductor shielded with standard 1/4-inch phone plug attached (supplied wired for high-impedance, unbalanced connection) Weight 737 g (26 oz)