Rockville RCM PRO is a professional cardioid condenser microphone designed for crystal-clear capturing of vocals, acoustic and amplified instruments, as well as room reverb. It features a large high-quality diaphragm for smooth, natural sound and low noise, along with a 25mm large cartridge for a bigger pickup area. The microphone has a wide frequency response of 20Hz to 20KHz, ensuring accurate reproduction of both high and low frequencies. It also boasts high SPL handling and a wide dynamic range, making it suitable for various applications.