1、[Volume adjustment]Professional volume control knob can adjust the output volume of earphones and L / R. 2、[Widely Applicable]Wide compatible with PS3, PS4, Xbox, Blu-ray player, HD DVD, home theater system, AV Amplifier, sky HD plasma, and all devices with digital optics or coaxial. 3、[Useful] 24-bit s / PDIF input bitstream on the left and right channels. Provide transmission without electromagnetic noise. 4、[Easy to Use]Plug and play, no need to install extra programs. 5、[Practical]High-quality material can reduce interference and make the connection stronger. A stable connection brings a good user experience. Description: Audio converter is ideal for home or professional audio switching. Features: [Volume adjustment]Professional volume control knob can adjust the output volume of earphones and L / R. [Widely Applicable]Wide compatible with PS3, PS4, Xbox, Blu-ray player, HD DVD, home theater system, AV Amplifier, sky HD plasma, and all devices with digital optics or coaxial. [Useful] 24-bit s / PDIF input bitstream on the left and right channels. Provide transmission without electromagnetic noise. [Easy to Use]Plug and play, no need to install extra programs. [Practical]High-quality material can reduce interference and make the connection stronger. A stable connection brings a good user experience. Specifications: Item Name: Audio Converter Material: Aluminium Input Interface: for Toslink, Coaxial Output Interface: R/L RCA, for Toslink, Coaxial, 3.5mm Signal Sampling Rate: 32-192KHz Bit Rate: 16-24bit Output Impedance: 16-300Ohm Working Voltage: 5V Features: Volume Adjustment, Plug, and Play, Digital to Analog Package Size: 21.5*14.9*5.4cm/8.46*5.87*2.13inch Package Weight:240g/0.53lb Package List: 1 x Audio Converter 1 x USB Power Cable 1 x Optical Cable 1 x User Manual 1 x Audio Converter 1 x USB Power Cable 1 x Optical Cable 1 x User Manual