2. Regarding issues connecting the D03K to TVs and audio systems.

A: 1. The D03K does not support Dolby, DTS or other multichannel input.  Please set your equipment’s audio output format to stereo PCM.
2. When the D03K is connected to an Apple TV, it will produce about 1 minute of noise upon connection of the Apple TV to AC power as the Apple TV's optical digital output is initializing.  After that, the D03K will play audio normally from the Apple TV; this is a normal phenomenon.
3. While the audio output is confirmed to be stereo PCM, if noise / interference occurs while playing songs, please try swapping out the optical / coaxial cable for one of better quality and confirm that the connection is secure, or try changing the RCA cable.