Hercules III provides HD audio support from the Tunnel Creek CPU and a Realtek ALC262 high definition codec.
Audio I/O includes stereo line in, stereo line out, amplified out and mono mic in.
Hercules III includes audio power amplifier circuitry for stereo speaker output. The amplifier circuit is powered by +5VDC from the board. User DC control of volume is provided which overrides the software settings.