The Sony ECM-100N is an Omni-directional electret condenser microphone ideal for instrument recording in studio and compatible with High-Resolution Audio. Equipped with a newly developed microphone capsule, the ECM-100U delivers flat and wide frequency response of 20 to 50,000 Hz and picks up the raw sound echoing in space.Omni-directional electret condenser microphone from Sony's Hi Res range. ideal for instrument recording this mic has flat and wide freqeuncy repsonse of 20Hz to 50 kHz. Two part metallic contrsuction to eliminate acoustic vibration.