Exchange possible with a good phone. High-performance general purpose recording microphone. Sound Level: Equivalent noise level 19 dB-A. Noise/Signal: 75 dB-A. Main Specs: Frequency Range 20 - 20000 Hz, Sensitivity 24 mV/Pa, Output Impedance <= 200 Ohms, Recommended load impedance >= 1000 Ohms. Dimension: Length 165 mm, Diameter 54 mm. Weight: 455 g. Polar pattern: Cardioid. Connector: Wired. Power Module: Voltage 44 to 52 V, Current <= 3 mA. Description: AKG P120 High-Performance Microphone. The AKG P120 High-Performance General Purpose Recording Microphone comes with a 2/3-inch diaphragm true condenser microphone that offers solid build quality, outstanding performance, and excellent value. The P120 is built to resist high temperatures and humidity. The rugged body and sturdy front grille protect it from tough handling.