NOTE: The FiiO D3 (D03K) only supports PCM audio signals and does not support Dolby, DTS, or other surround sound signals. Therefore, it is important that the digital audio output of your device defaults to or can be set to PCM/LPCM output. Otherwise, the sound output will be noise/static.
The FiiO D3 (D03K) is a quick and easy way to convert digital audio into high fidelity stereo analog sound. It is ideal for interfacing between modern digital audio/video devices with analog amplifiers, self-powered speakers, or wireless headphones. The D3 (D03K) works with any audio source with an optical (Toslink) or coaxial digital output and is famous for its incredible quality and reliability.

Here are just a few of the devices supported:
Digital TVs and HDTVs
CD, DVD, Blu-Ray players
Digital media streamers and players
Game consoles
Satellite/Cable receivers and DVRs
AV Receivers and Integrated Amplifiers
Feature Highlights
Built-in high-performance phase-locked loop (PLL)
Ultra low jitter digital receiver
Supports up to 192KHz/24bit audio signal
Optical and coaxial inputs with selection switch
2 channel standard stereo RCA output
3.5mm stereo mini-jack for use with wireless headphones
Indicator for digital receiving status
MINI USB power supply port
Specifications
Power supply: USB 5V (Not Included)
Audio Signal Output: 1.6V
Frequency Response: 20Hz~20KHz
S/N Ratio: >90dB
Crosstalk: 75dB
THD:
Size: 61.6mm×49.1mm×21mm
Weight: 50g