‌The Prodipe Saint Louis Microphone is designed by and for people who play the harmonica. Its perfect ergonomics offers unparalleled comfort while playing. Prodipe Saint Louis offers a warm and dynamic sound, exactly what harmonica users are looking for. An impedance transformer is attached to the microphone, which allows you to connect it directly to an amplifier or guitar effects. Specification: Type: Dynamic Directivity: Unidirectional Impedance: 600 Ω ± 30% (at 1KHz) Sensitivity: -49.3 ± 3dB (at 1KHz) Frequency response: 50Hz - 14000Hz Dimensions: 25 x 9.5 x 6 cm Weight: 492 g