DAC - Universal - Coaxial/Analog/Optical to Analog Digital Audio Converter Highlights Universal Coaxial/Analog/Optical to Analog Digital Audio Converter Coaxial to Ogic / Optical to Ogic Digital Audio Converter Product is shipped based on color or the size of the main product page image. Features: 1. Digital-to-logic converter: This DAC converter converts coaxial or digital audio signals to toslin High fidelity headphones, very suitable for home or commercial audio switching. Bi-directional switch design is not only DAC type converter, not only digital to digital converter, but also toslink to coax and coax to toslink. Support volume adjustment: built-in high fidelity power amplifier chip, left and right 3.5mm output can drive 16-150 ohm impedance headphones/sound. Support volume control, volume control knob, only used to adjust the volume of headphone jack and RCA interface, not for coax or toslink.4. Plug and Play: Comes with 4.0 OD cable, coaxial cable and power adapter, no need to install extra programs, plug and play. Sampling rate up to 192kHz: Through the volume knob, you can adjust the audio output volume of RCA L/R + 3.5mm jack, which is convenient for operation. It supports 32, 44.1, 48, 96, and 192 kHz sample rates, as well as 24-bit S/PDIF input bitstreams on left and right channels. There is a power switch on the volume buttons. Please turn on the power switch before using the DAC.2. Set audio output to PCM/LPCM Format.3. For Samsung TV, if there is no sound even though the audio output is set to PCM/LPCM format, please enable the TV's external speakers (Menu Settings-Sound-Speaker-HESB/Speaker- external speaker) 4. This converter does not support 5.1 channels such as Dolby and DTS.5. PS4 Pro and PS4 Slim cannot use this converter because they have no optical output interface. This converter supports digital to digital, but does not support digital to digital. There is no control over the Toslink or coaxial audio output.