The TC Series (Time Coherent), which includes this TC20 small-diaphragm condenser with omnidirectional polar patter microphone, is designed for recording louder sources such as drums, percussion, amplified instruments and loud sound effects. Microphones in this series allow recording of louder acoustic sources without overloading the preamplifier. Models in the TC Series are often the choice for recording drum overheads, close miked or amplified instruments and sound effects.