The Audio-Technica AT898 lavalier microphone is designed to be mounted on, or hidden underneath clothing. It's slim low-profile design is ideal for broadcast and theatrical applications. The tailored frequency response accentuates the frequency response of vocals while minimizing low frequency noise. A low-frequency roll-off switch further minimizes noise due to hum, ambiance and proximity effect. The AT898 features a condenser element with a cardioid polar pattern. The cardioid pattern is effective in minimizing noise and ambiance at the off-axis sections of the microphone capsule. The microphone includes the AT8537 phantom power supply module.