1、This DAC audio converter supports one optical and one coaxial interface input. 2、This digital to analog audio converter supports the maximum 192K/24bit sampling rate 3、This analog to digital audio converter has a built‑in DAC chip, which is of high‑performance. 4、This analog to digital audio converter supports 2RCA and a 5mm audio port output. 5、This analog to digital audio converter supports signal input switching, output volume control and infrared remote control. 1 x Converter1 x Fiber Optic Cable1 x USB Power Supply Line1 x Remote Control (without Batteries)1 x Manual Item Type: DAC Audio ConverterProduct Material: ABSAudio Format: PCMAudio Sampling Rate: 32~192KhzSNR: -100dbWorking Voltage: 5VWorking Environment Temperature: -10-70℃Storage Temperature: -60-150℃Working Environment Humidity: 10-80%RH (Non-condensing)Storage Environment Humidity: 5-90%RH (Non-condensing)Remote Control Battery: 2x AAA Batteries (Not Included)