Abstract: An audio-interface miniaturized into an audio interface device has been provided. The audio interface device includes an audio connector. Further, the audio interface device houses a circuit board assembly including necessary electronics to perform analog-to-digital conversion, and vice-versa. For example, the circuit board assembly may include at least an analogue preamplifier, an audio codec, one or more connectors, an audio controller, a Universal Serial Bus (USB) interface, and an USB connector. The circuit board assembly may be housed inside a body of the audio interface device.