This paper presents a prototype of a 3D audio recording system which uses Wireless Acoustic Sensors to capture spatial audio. The sound is recorded in real-time by microphones embedded in each sensor device and streamed to a Processing Unit for 3D audio compression. One of the key problems in such systems is audio latency, therefore this paper is focused on optimising the audio streaming time. Experimentation with the prototype system have shown that it is possible to achieve an end-to-end audio delay of 10ms and less using the Opus codec.