Bang & Olufsen Beomic 3 (150 ohms) and Beomic 4 (multi- impedance) models were pressure-gradient full-bass microphones with a perfect figure-eight directional pattern.

Features: No resonance peaks. Extremely smooth response. Bi-Directional – no side pickup. No frequency discrimination, front to back. High efficiency Nu-Metal transformer placed in microphone housing. Switch for muting and voice/music conditions. 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 to any position.