The black Isomax 2 All-Purpose Microphone, Low Gain with 3.5mm Locking Connector for Azden 15BT and 35BT Wireless Transmitters from Countryman features a frequency-independent capsule that delivers tight pattern control as an all-around instrument microphone. It can be used to capture audio in sound reinforcement applications for saxophone, violin, viola, cello, double bass, acoustic guitar, flute, piano, brass, and percussion instruments.