Audio-Technica Pro35, Mini Clip-on Microphone, Condenser microphone, Cardioid, Ideal for brass and toms, Cardioid, Frequency response: 50-15000 Hz, Open circuit sensitivity: -45 dB (5.6 mV), Impedance: 250 Ohm, Maximum input sound level: 145 dB SPL, Phantom power: 11-52V DC, 2 mA typical, Switch: Flat, roll-off, Weight (microphone): 8 g, Weight (mains adapter): 81 g, Dimensions (microphone): 5.0 mm long, diameter 10.2 mm, Dimensions (mains adapter): 92.9 mm long, diameter 18.9 mm, 3-Pin XLRM-type (power module)