The Audio-Technica AT8545 is a power module for BP892x, BP893x and BP894x headworn microphones, featuring a cH-style screw-down 4-pin connector input and 3-pin XLRM-type output. The AT8545 is also suitable for use with any Audio-Technica lavalier or headset microphone terminated with a cH-style connector, allowing you to convert a wireless microphone into a wired model. Comes equipped with a snap-on belt clip.