Musical Instrument & Vocal Microphones
Shure Beta 91A
Shure Beta 91A, Condenser boundary microphone, Combination of Beta 91 and SM 91, Switchable frequency range for bass drums or piano/ voice applications, Polar pattern: half cardioid, Frequency range: 20 - 20,000 Hz, Impedance: 146 O, 11-52 V Phantom...
https://www.bizrate.co.uk/musicalinstrument_vocalmicrophones/shure-beta-91a-oid2258726064.html