The Sennheiser e609 is a super-cardioid 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 SpecsDimensions: 55 x 34 x 134 mmConnector: XLR-3Frequency response (Microphone): 40 - 15000 HzTransducer principle (Microphone): dynamicWeight: 140 gPick-up pattern: super-cardioidSensitivity in free field, no load (1kHz): 1.5 mV/PaNominal impedance: 350 OhmMin. terminating impedance: 1000 OhINST