The black Shure MX150B/C-XLR Subminiature Cardioid Lavalier Microphone is a small lavalier microphone ideal for broadcasts, sermons, presentations, public speaking, and more. This version includes the RK100PK XLR in-line preamp for use with standard XLR connections on mixers, recorders, mic-pres, etc. sermons, presentations, public address and much more. This version includes the RK100PK XLR in-line preamp for use with standard XLR connections on mixers, recorders, mic-pres, etc..PZA MORE SPECS