The Avantree DAC02 converts coaxial or optical digital audio input to analog stereo output with high performance. It can support Digital TV, CD, DVD, Blue-Ray, Game console. NOTE: The DAC02 only supports PCM/LPCM 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 noisy/static.Some TV may have PCM / LPCM as the default setting. If not, please set the PCM or LPCM setting as below: System setting--sound--audio--sound format. Specifications * Charging voltage /currency: 5V/1A * Sampling rate: 192kHz/ 24bit, 96kHz, 48kHz, 44.1kHz, 32kHz * Dimensions (mm): 88(L)x60(W)x23(H) * Weight: 80g What's in the box? * Digital to analog converter * USB charging cable * 1m Optical cable * Quick user guide Warranty We offer 24 Months Warranty for normal use. Live online support, Telephone Support, and email support are available. Video user guide are available also from Avantree site. Support Any issues or suggestions, contact us via our US toll free No, Intl number, OR email us and 1 business day reply is guaranteed. We are committed to 100% customer satisfaction.