Studio microphone. The Neumann U 87 Ai is probably the best-known and most frequently used studio microphone the world over. Its smooth and refined sound is as iconic as its elegant exterior design. The U 87 Ai is the standard microphone for speech and vocals. Three polar patterns plus pad and low cut options make it adaptable to a wide range of applications. Its natural sound and unique midrange presence make the U 87 Ai the ultimate vocal microphone, praised by singers and engineers alike, as well the prime choice for speech applications, such as voice over, dubbing, and audio books. Due to its balanced response in each of its three directional patterns, the U 87 Ai is also a versatile microphone for anything from acoustic guitar to drums overheads. Due to its solid bass response and excellent midrange detail, it is often seen in front of bass and guitar cabinets. For classical recordings, the U 87 Ai is frequently used as a spot mic for soloists, e.g. cello. A stereo pair of U 87 Ais is the preferred choice of many engineers for recording piano in virtually any genre from pop and jazz to classical music.