Beomic BM 5 stereo ribbon microphone, very nice wooden box very elegant microphone from Bang & Olufsen, in a nice wooden case with nice details Tests and works Tested and there is sound through Seen as a unique collector's item Beomic 5 (150 ohms) mono/stereo ribbon model was a pressure gradient full range microphone with a perfect figure-eight pattern. Features: No resonance peaks. Extremely smooth response. Bi-directional, no side pickup. No frequency discrimination front to back. High efficiency mu-metal transformer placed in microphone housing. Easy to convert from mono- to stereo-microphone. Steel housing to reduce hum sensitivity. Switches for close Talk (T) / Music (M) conditions and for phase reversing and muting. The miniature non-corrosive duraluminium ribbon was only 0.0001" -thick and its weight only 1.3 mg. This negligible mass prevented any resonance within the audio range. Shock- and blast-proof. Ball swivel for tilting into any position.