Features: 1. 1. Digital-to-analog converter: This DAC converter can convert coaxial or for Toslink digital audio signals into analog left/right audio, and can be connected to external devices, such as amplifiers, through standard RCA-type jacks, and you can also choose 3.5mm headphones Jack output, connected to high-fidelity headphones, is an ideal choice for home or professional audio switching. 2. 2. Two-way switch: The design of two-way switch makes it more than DAC converter. It not only supports digital-to-analog converter, but also supports digital-to-analog converter (support for Toslink to coaxial and Coaxial to for Toslink), please note: this converter supports Digital to analog, but does not support analog digital. 3. 3. Support volume adjustment: Built-in high-fidelity amplifier chip, left/right and 3.5mm output can drive 16~150ohm impedance headphones/sound. Support volume control, volume control knob, only used to adjust the volume of the headphone jack and RCA jack, not for coaxial or for Toslink. 4. 4. Plug and play: Comes with 4.0 OD optical cable, coaxial cable and power adapter, no need to install additional programs, just plug and play (note: this converter does not support 5.1 channels such as Dolby and DTS; please Set the audio output to PCM or LPCM before use; for PS4 Pro and for PS4 Slim cannot use this converter). 5. 5. Up to 192KHz sampling rate: Using the volume knob, you can adjust the audio output volume of the RCA L/R + 3.5mm jack, which is easy to use (note: you cannot control for Toslink or coaxial audio output). It actually supports sampling rates of 32, 44.1, 48, 96 and 192 KHz, as well as 24-bit S/PDIF incoming bit streams on the left and right channels. 6. specification:Type: Audio Adapter/Converter Material: Aluminum Input interface: for Toslink, coaxial Output interface: R/L RCA, for Toslink, coaxial, 3.5mm Signal sampling rate: 32-192 KHz Bit rate: 16-24 bits Output impedance: 16-300 ohm Working voltage: 5V Body: 8.3*7.2*2.7cm USB power cord length: 60cm Optical fiber cable length: 1 meter Package included: 1*Host 1*Optical cable 1*USB power supply line