Feature: 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 Package List: Note: 1. There is a power switch on the volume knob, please turn on the power switch before using the DAC. 2. Please set the audio output to PCM/LPCM format. 3. Compatible For Samsung TV, if there is no sound even if the audio output is set to PCM/LPCM format, please turn on the external speakers of the TV (Menu-Sound-Speaker Settings-HESB / External Speaker-On) 4. This converter does not support 5.1 channels such as Dolby and DTS. 5. For PS4 Pro and for PS4 Slim cannot use this converter because they do not have an optical output interface.