# USB Audio Interface

By connecting the S4 to through the USB-C to a computer running a DAW (Windows, macOS, or Linux), the S4 can act as USB audio interface. The S4 streams the individual stereo tracks and the main out through a 10 in/10 out USB audio connection. To access individual tracks in a DAW, follow the routing below:

|          | Input | Output |
| -------- | ----- | ------ |
| TRACK 1  | 3/4   | 1/2    |
| TRACK 2  | 5/6   | 3/4    |
| TRACK 3  | 7/8   | 5/6    |
| TRACK 4  | 9/10  | 7/8    |
| MAIN OUT | 1/2   | 9/10   |

{% hint style="warning" %}
Using S4 as an audio interface with a computer is CPU intensive for the S4. To avoid pops and clicks follow these guidelines:

* Avoid sending many simultaneous notes to POLY
* Avoid having high settings of SIZE in MOSAIC
  {% endhint %}