Acoustic levitation is a promising technique for contactless handling of small objects. However, for acoustic levitation in air, the positioning precision is usually too low and the response time too long for practical applications. In this work, we implement feedback control to reach high positioning precision. We realize real-time position monitoring at 2 kHz by an event camera and tracking algorithm. Using system identification and modeling, we design a PID controller for position feedback that can stabilize the position along a single axis. The controller is shown to reduce the particle response time to 0.06 s and reach a closed-loop RMS horizontal positioning error of 19 µm, outperforming the state of the art. With the feedback control, the positioning precision of acoustic levitation is brought into a regime comparable to the positioning performance of additive manufacturing methodologies. ... Read more