TechnicalSpecificati***：型号：A290换能方式/Type电容式/Condenser指向性/PolarPattem心形/cardioid灵敏度/Sensitivity-47dB&plu***n;2dB频率响应/FrequencyResp***e60Hz~15000Hz输出阻抗/OutputInpedance200Ω适音距离/Pickupdistance20~50cm供电电压/PowerDC1.5V/9V特点/Feature抗手机、电磁干扰/Anti-cellphone,electromagneticinterference)