Dolby + PCM Optical Audio To Analog Stereo Sound Converter Great Dolby 5.1 decoder and digital PCM audio decoder for legacy analog sound system such as amplifier, audio receiver, headphone, powered speaker system or audio recorder. Allows users to convert HDTV optical audio into analog stereo for hookup with their AV receivers, headphones or powered speaker systems. Designed to down-mix from Dolby Digital 5.1 audio an decode into analog stereo sound in real time with supreme sonic quality retained. Embedded Dolby Digital Decoder technology for digital down mixing with integrated digital interpolator filter built in. Supports optical digital audio signal inputs from Dolby Digital 5.1 and digital PCM stereo devices such as HD cable box, satellite receiver, Blu-ray player or computer sound card. Supports digital audio format in Dolby Digital 5.1 channel or uncompressed digital PCM type. Supports Dolby Digital audio sampling rates of 32, 44.1 and 48 kHz maximum. Supports LPCM audio sampling rates from 32 to 96 kHz (32, 44.1, 48, 88.2 and 96 kHz) Output sampling rate is auto adjusted to 48kHz. Provides electromagnetic-noise-free transmission. Supports simultaneous outputs for added signal management flexibility. Compact size with elegant design and easy to install. Flexible power supply from either the supplied 5V DC power adapter or USB cable.