Cardioid Dynamic Vocal Microphone with Revonic Transducer Technology for Professional Performance. Nexadyne Cardioid Vocal Microphone including mic clip & protective caseThe NexadyneTM 8/C Dynamic Vocal Microphone is a cardioid dynamic microphone for professional vocal performance. Nexadyne 8 microphones feature patented Shure RevonicTM dual-engine technology, with two precisely calibrated transducers working together to achieve optimal performance. The result is a high performing microphone line that combines state-of-the-art acoustic signal processing and exceptional cardioid polar pattern linearity. The clean and natural cardioid pattern of the Nexadyne 8/C allows vocals to easily reach every corner of the venue. Built with the industry-standard of consistency, durability, and performance that only Shure can provide.