4. Audio configuration Please read carefully 3. Which audio setup do I use? to know which of the following case(s) will match your setup. Case 1: OBS + Mic/Aux source Case 2: OBS + Desktop Audio Source Case 3: OBS + ReaStream VST (Windows only) Case 4: OBS + OBS-ASIO (Windows only) Case 5: OBS + OBS-ASIO + ASIO mixer (Windows only) Case 6: OBS + BlackHole (macOS only)