This interface module allows you to extract an audio signal from HDMI to output directly to I2S or SPDIF. The I2S is capable of supporting high resolution DSD files as well as DTS or AC3. For its power supply, the interface can either take advantage of the power supply of the module associated with it (if the latter allows it) or be powered via a dedicated 5V DC power supply.

Warning: this module does not extract SPDIF from a digital output of a standard HDMI port.