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.
Type Dynamic
Frequency Response 100 to 5,000 Hz
Polar Pattern Omnidirectional
Impedance High, unbalanced
Load Impedance Range Minimum: 100 kilohms
Output Level (at 1,000 Hz) Open Circuit Voltage -38.0 dBV/Pa (13 mV)* *1 Pa = 94 dB SPL
Polarity Positive sound pressure on diaphragm produces positive voltage on tip with respect to sleeve (ground) of microphone output phone plug connector
Cable 6.1 m (20 ft) two conductor shielded with standard 1/4-inch phone plug attached (supplied wired for high-impedance, unbalanced connection)
Case Green and chrome finished die casting
Dimensions 63 mm (2.5 in) max diameter, 82.6 mm (3 1/4 in) long
Taking after the bullet mics Shure introduced in 1949, which in and of themselves were evolutions from the first desk-mounted announcement microphones, the Shure 520DX is the most up-to-date iteration of the company's green bullet harmonica mic. Known for its distinctive "blues harp voice," the 520DX features an onboard volume knob that allows you to dial in on the fly, and its 1/4" plug gives you the opportunity to plug into any high-impedance device. Use it for your harmonica or if you're digging the lo-fi sound.