Built-in Audio Amplifier Chip: Professional audio amplifier chip can amplify the RCA output level and makes the sound pure and clear. Compact and Lightweight, it is more convenient to connect and install without occupying any spaceInput and Output: Optical/Toslink/SPDIF input (optical input interface to be connected to HD TV, DVD player and other devices); RCA and 3.5mm output (RCA and 3.5mm output interfaces to be connected to the audio amplification device with RCA interface or 3.5mm interface). Optical to RCA, optical to 3.5mm, Toslink to RCA, etc192kHz DAC Converter: SPDIF to RCA+3.5mm converter, digital to analog converter converts optical toslink digital audio signals to analog rca+3.5mm audio.(Not compatible with RCA/3.5mm to Optical)192kHz Sampling Rate achieved: Supports Sampling Rate at 32; 44.1; 48; 96 and 192kHz, and 24-bit SPDIF Incoming Bit Stream on Left and Right Channels;Plug and Play- Easily install and operate, perfectly work with HD TV, Set top box, DVD/Blu-Ray players and game consoles ,NOTE: Our DAC Converter Incompatible with DTS 5.1 channel signal such as Dolby AC3, Not compatible with RCA/3.5mm to Optical, And please set the TV audio Output to PCM compatible withmat becompatible withe using. Please check your device interface becompatible withe purchasing