The Sennheiser e609 is a super-cardioid silver instrument microphone designed for miking guitar cabs face-on and extremely close to the source. This is a hum compensating dynamic microphone that will help you to control your feedback. It's flat shape makes it quick and easy to apply and the capsule provides low sensitivity to structure-borne noise. Simply hang the e609 in front of the amp's speaker and it will faithfully pickup any sound the amp can dish out. Rugged metal body Advanced shock-mount design Super-cardioid pick-up pattern Hum compensating coil Specs Dimensions: 55 x 34 x 134 mm Connector: XLR-3 Frequency response (Microphone): 40 - 15000 Hz Transducer principle (Microphone): dynamic Weight: 140 g Pick-up pattern: super-cardioid Sensitivity in free field, no load (1kHz): 1.5 mV/Pa Nominal impedance: 350 Ohm Min. terminating impedance: 1000 Ohm