The 520DX which is known as 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.

What is this microphone best suited to?

The Shure 520DX has predominately been used for the harmonica, but can also be used for distinct, lo-fi vocals

Features

• Volume control knob allows users to adjust the volume to fit each musical situation
• Rugged, dynamic cartridge with improved response
• High-impedance, omnidirectional
• Supplied with 1/4 inch connector
• Frequency response 100 to 5,000 Hz
  
  Specs
• Transducer Type : Dynamic
• Polar Pattern: Omnidirectional
• Frequency Response: 100 Hz 5 kHz
• Sensitivity (1 kHz): -38 dBV/Pa / 12,5 mV/Pa
• Weight: 737 g