Sigma 2: Ribbon MicrophoneWe say: This is a beautiful ribbon microphone, capable of capturing sound from a variety of sources. It comes with a very sturdy travel case and microphone mount alongside Sontronics' lifetime warranty. Sontronics say: Our original Sigma was one of the first phantom powered ribbon microphones in the world. Offering high sensitivity, low self noise and plug and play compatibility with any audio interface, preamp or mixer, Sigma and its V2 successor