PROZOR Digital to Analog Converter: Supports optical, coaxial, bluetooth-transmitted digital audio signals into stereo RCA & 3.5mm audio output when connecting modern devices to legacy amplifiers Bluetooth Audio Adapter: Built-in Bluetooth 5.0 receiver module and dual-antenna design, supports wireless connections to mobile devices through lossless transmission technology, ensuring stable connectivity within a 50-65ft (15-20m) indoor range High Performance: Built-in high-performance DAC chip, supports 192K/24bit sampling rate. Adopts Bluetooth dedicated antenna for stable signal transmission, adopts personalized status indicator Pulg-and-Play: Automatically switch to bluetooth playback mode after successful bluetooth connection; Power ON/OFF Switch, long press 3 seconds to turn off, short press to turn on Versatile Application: Input: one optical and one coaxial , Output: one RCA and one 3.5mm audio; For home theater, teaching, training structure, conference rooms, appliance stores and other places Audio Formats: PCM/LPCM Audio Sample Rate: 32~192K Bluetooth Audio Sample Rate: 32~48K Bluetooth Version: 5.0 Version RCA output maximum level: 1.2Vrms 3.5mm audio interface maximum output level: 2Vrms 3.5mm audio port maximum output power: 30mW Maximum working current: 5V/60mA Working environment temperature: -10~+55°C Storage environment temperature: -26~+60°C Working environment humidity: 10~90%RH (no condensation) Storage environment humidity: 5~95% RH (no condensation) Shell material: Iron Color: Black