The Electro-Voice RE320 is a Variable-D Dynamic Vocal and Instrument Microphone for broadcasting, podcasting, recording, and sound reinforcement applications requiring extremely low noise and the best possible tonal and transient response. Ideal for capturing a wide variety of vocal and instrument sources, the RE320 delivers unparalleled detail, dynamic response, and pleasing natural tone. Product Specifications: Generating Element: Dynamic N/Dym Magnet Structure Frequency Response: 30 Hz - 18,000 Hz (kick curve) 45 Hz - 18,000 Hz (general curve) Polar Pattern: Cardioid Impedance: 150 ohms balanced Case Material: Steel Dimensions: Length = 216.7 mm (8.53 in) Widest Diameter = 54.4 mm (2.14 in) Body Diameter: = 49.2 mm (1.94 in) Finish: Semi-Gloss Black Net Weight: 681 g (1 lb, 8 oz) Shipping Weight: 1503 g (3 lb, 5 oz) Accessories Furnished: 81715 stand clamp Optional Accessories: WSPL-2 Foam Wind Screen 309A Isolation Mount