Note that the 1956 specification describes only 45° of forward movement, rather that 55° is in 1981. The microphone’s headbasket can tilt in relation to the lower housing according to the specifications, it can travel through 125° of rotation (55° forward, 70° backward). A female XLR jack is built into an extrusion on the rear of this housing. The bottom of the mic’s housing is threaded (female) to accept a standard mic stand (5/8''-27). The Model 330 is a “unidirectional,” supercardioid passive ribbon microphone manufactured by Shure from around 1957 through 1983, according to Shure. Shure Model 330 Supercardioid Ribbon Microphone