Goliton Microphone for PANASONIC AG MC200G HVX200 DVX100 A B AG DVC30 Sony DSR 250P HVR Frequency response: 100kHz-18kHz. Sensitivity: 70dB (0dB=1V/Pa at 1KHz). Direction: Uni-direction. S/N Ratio: 76dB (1KHz at 1 Pa). Power Requirement: DC 11-49V.