Product description: This digital-to-analog converter and bluetooth converter converts optical or coaxial digital audio signals and bluetooth receivers into stereo analog signals. Helps users connect high-quality digital audio signals to conventional audio amplifiers. This product is ideal for home theater, teaching, training structures, conference rooms, appliance stores, and more. Features: * Support digital audio signal conversion to analog audio * Bluetooth receiver, built-in Bluetooth 5.0 version chip * Support one optical fiber and one coaxial interface input * Support RL audio port output * Built-in high-performance chip supports 192khz/24-bit audio parameters* Ultra-low power consumption*ABS shell*DC5V*Size: 50*42*22mm