AKG P3 S Dynamic Cardioid Live Microphone Rugged performance microphone is designed for backing vocals and instruments. Features include: Rugged wire mesh cap with internal windscreen. Die-cast metal body, complete with stand adapter and zip bag. On/Off switch Polar pattern Cardioid Frequency range 40 to 18, 000 Hz. Sensitivity 2. 5mV/Pa Max. SPL 144 dB SPL Recommended load impedance >=2, 000 ohms.