Features: Support output volume control, built-in high performance DAC chip, up to 192K/24bit sampling rate. This product is made of high quality ABS material, strong and durable. Support signal input switching, connect high quality digital audio signals to ordinary AV amplifiers. Suitable for home theater, teaching, training structure, conference rooms, home appliance stores, etc. Support infrared remote control, support one fiber and one coaxial interface input. Specification: Material: ABS Audio Format: PCM/LPCM Audio Sampling Rate: 32-192K RCA Output Maximum Level: 1.2Vrms 3.5mm Audio Port Output Maximum Level: 2Vrms 3.5mm Audio Port Output Maximum Power: 30mW Maximum Operating Voltage / Current: 5V / 50mA Working Environment Temperature: -10-+55℃ Storage Environment Temperature: -26-+60℃ Working Environment Humidity: 10-90% RH (no condensation) Storage Environment Humidity: 5-95% RH (no condensation) Battery: CR2025 button battery Package List: 1 x Audio Converter 1 x Optical Fiber Cable 1 x USB Charging Cable 1 x Remote Control 1 x Instructions Note: Operate Method: Use a fiber optic cable or coaxial cable to connect the source device to the converter. Connect the converter output connector to the input of the AV amplifier using an RCA cable or a 3.5mm audio cable. Connect the power adapter to the converter's DC 5V connector using a USB cable, and plug the adapter into a power outlet. 1、Support output volume control, built-in high performance DAC chip, up to 192K/24bit sampling rate. 2、This product is made of high quality ABS material, strong and durable. 3、Support signal input switching, connect high quality digital audio signals to ordinary AV amplifiers. 4、Suitable for home theater, teaching, training structure, conference rooms, home appliance stores, etc. 5、Support infrared remote control, support one fiber and one coaxial interface input.