In some cases, depending on conditions or the specification of the computer, a drop-out noise in a recorded audio file can be produced as a result of an interruption in the signal flow. When using the above products, even if the USB Audio Driver is not installed, a class compliant driver (OS standard driver) is automatically applied when the product is connected to the computer with a USB cable. The USB Audio Driver is required to connect one of above USB audio devices to your computer.