The AK4545 supports S/PDIF output that is digital audio transmitter of IEC958. Audio digital data in PC can be output by this S/PDIF out. The AK4545 provides two pairs of stereo outputs with independent volume controls, a mono output, and multiple stereo and mono inputs, along with flexible mixing, gain and mute functions to provide a complete integrated audio solution for PCs. In addition, the AK4545 has the POP feature suitable for 3D positioning and direct output from DAC for AD monitoring.