Broad coverage for a variety of applications While the TM-90BM does feature a hemispherical pickup patter on the Horizontal plane, it is also a uni-directional condenser mic on the vertical plane, and should be positioned with the TASCAM logo facing the audio source. And being a condenser microphone, the TM-90BM requires Phantom power which can be supplied remotely from your mixer, Mic preamp or audio interface as well as through the use of an on-board dry-cell battery.