This is the BLX2 transmitter, equipped with a BETA 58A mic capsule. The BLX2 is Shure's latest analog wireless transmitter and incorporates features found on much more expensive systems. The BETA 58A capsule is a fantastic-sounding microphone, equipped with a neodymium mic element. It is crisp, clear and present, with a warm and well-defined bottom. This is a professional-quality transmitter and microphone.