neumann tlm 103 mt studio set cardioid large diaphragm condenser studio microphone, black neumann the tlm 103 has quickly become one of the biggest successes in neumann’s history. its pristine, clear sound is a modern update on the classic u87. the tlm 103 is a transformerless cardioid condenser microphone with a gentle presence boost for a stunningly direct sound with breathtaking definition and ultra low noise.