TC-Helicon MP-75, dynamic vocal microphone, incl. Mic Control circuit for controlling TC-Helicon vocal Effects (Button), Polar Pattern: Supercardioid, Impedance: Rated impedance is 150 ohms (300 ohms actual), Output Level (at 1KHz): -54dBV/Pa (1.99mV) - 1 Pa = 94 dB SPL, Frequency Response: 50 Hz -18kHz, dimensions (H/D): 185 x 50 mm, weight: 290g