Features: new and high quality The digital to analog converter and bluetooth-compatible converters convert optical or coaxial digital aux signals and bluetooth-compatible receivers into analog signals. Aux power amplifier helps users connect high quality digital auxsignals to regular aux channels. This product is suitable for home theater, teaching, training structure, conference room, home appliance store and other places to use. Supports one fiber and one coaxial input Built-in high-performances chip supports 192khz/24-bit aux parameters Specifications: Material:ABS Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Set Digital To Analog Converter