This DAC converter converts digital audio signals to analog L/R audio and can be connected to external devices such as amplifiers by a standard RCA-type jack. You can also Choose 3.5mm headphone jack output to connect high-fidelity headphones. With volume knob, you can adjust the volume of RCA L/R + 3.5mm jack audio output, convenient to use. It's ideal for home or professional audio switching. Plug and play, no need to install extra programs. Item Name: Audio Converter Material: Aluminum Input Interface: for Tos-link, Coaxial Output Interface: R/L RCA, for Tos-link, 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 This digital-to-analog audio converter is designed for home or professional audio switching. He converts coaxial or To s link digital audio signals into analog L / R audio and can be connected to an external device, such as via a standard RCA_type amplifier. You can also 3.5mm headphone jack output, connect high-fidelity headphones. The converter is small and easy to install. Built-in high fidelity amplifier chip,