Bundle includes CAD Trion 7000 Dual-Element Ribbon Microphone, Headphones, Velcro Cable Ties, 20-Foot XLR Cable, Windscreen, and Polishing Cloth. Thick and rich, the dual ribbon "rounds out" guitar stacks, brass, and woodwinds. A narrow strip of ultra thin aluminum suspended in a magnetic field oscillates symbiotically with your sound source. Electrical current is the result. We use two ribbons for added sensitivity. Experience classic ribbon vocal sound. Elastic shock mount and metal travel case are included. Operating Principle: Moving ribbon dynamic Polar Pattern: Figure-of-eight Frequency Response: 25Hz to 9KHz Sensitivity: -53dBV (2.2mV) @ 1 Pa Impedance: 940 ohms