1、DAC CONVERTER: Bluetooth converter coaxial or optical to analogue L R sound with 3.5 mm sound output to your headphones or headphone amplifier for home or professional sound switching. 2、DIGITAL TO ANALOGUE CONVERTER: The DAC converter supports the conversion of digital sound signals from optical, coaxial and Bluetooth transmission to stereo analogue RCA and 3.5 mm sound outputs when connected to an amplifier. 3、BLUETOOTH FUNCTION: The DAC converter uses the latest 5.0 Bluetooth receiver with built in Bluetooth receiver module and the latest Bluetooth version 5.0 lossless transmission technology to support Bluetooth connectivity for mobile devices. 4、STABLE PERFORMANCE: DAC adapter with electromagnetic noiseless transmission, support for sample rates of 32, 44.1, 48 and 96KHz and 24 bit SPDIF input bitstream for left and right channels. 5、APPLICATION: The DAC bluetooth converter supports 2.0 LPCM, PCM sound signals, not for Dolby, DTS or other 5.1 surround signals. Suitable for home theatre, teaching, training structures, conference rooms, home appliance stores, etc. 6、WIDE COMPATIBILITY: DAC adapter compatible with HDTV, for PS3, for PS4, for Xbox one, for HD DVD, for Sky HD, for IOS TV, for plasma, home theatre systems, AV amplifiers and more.