The AKG C519 is a professional clip-on mic with miniature gooseneck for wind instruments. From the Manufacturer: The C519 professional miniature condenser microphone clips gently onto the bell of a trumpet, saxophone, trombone, tuba, didgeridoo or any other wind instrument. Its tight cardioid polar pattern makes the C519 an ideal tool for use near monitor wedges, and its flat frequency response delivers a natural, powerful and clear sound. The MPAV from C519 M features an integrated, switchable bass cut for adjusting the microphone's frequency response. The C519 ML package includes a mini-XLR cable and the unique A400 adapter plate for easy mounting onto wireless body-pack transmitters PT40/45/450/470. Features: CARDIOID POLAR PATTERN: for problem-free use with high ambient noise rejection FLEXIBLE SHOCK MOUNT: for efficient suppression of mechanical and body noise RUGGED, HIGHLY STABLE GOOSE-NECK: for precise placement of the microphone DETACHABLE MICROPHONE CABLE: easy to install and service RUBBERIZED MOUNTING CLIP: for firm, gentle fit on a wide variety of instruments Specifications: General Specifications Audio frequency bandwidth: 60 - 20000 Hz Equivalent noise level: 31 dB-A Sensitivity: 5 mV/Pa Signal to Noise: 63 dB-A Electrical impedance: 200 Ohms Recommended load impedance: 2000 Ohms Polar Pattern: Cardioid Dimensions Width: 47 mm Height: 213 mm Net Weight: 195 g Design Body: metal Finish: matte black Audio Output Type: Mini XLR Gender: Female Contacts: 3-pin Powering Interface: Voltage: 9 to 52 V Current: 2 mA Application Project Studio Live Instrument Instrument Horns / Woodwinds