Plug and play - This DAC converter is equipped with an audio decoding chip, which is compatible with Dolby AC-3 DTS 5.1 channel audio. It perfectly solves the problems of speakers and amplifiers, and does not cause audio and noise problems such as buzzing, squeaking and screaming. Enjoy the hearing feast.Digital to Analog Converter - Converts coaxial/toslink/fiber audio signals to 2.0 analog L/R 3.5mm audio. Solve the problem that the device (such as the for / 4) does not have 3.5mm headphones and L/R.Volume adjustment - volume control knob used to adjust the output volume of headphones and L/R. Please note that this is only a digital to analog converter, not an audio amplifierHigh quality equipment - built-in high-performance RTOS operating system, supporting DTS/Dolby AC3/LPCM/PCM format. Supports sampling rates of 32,44.1,48,96 and 192 KHz; 24 bit S/PDIF input bitstream on the left and right channels. Provide transmission without electromagnetic noiseWide compatibility - perfect match with HDTV and satellite receiver, can be used for PS3, for , for , Blu ray player, HD DVD, home theater system, AV amplifier, HD plasma, for TV and all equipment ports with digital optics or coaxial.Type: Audio Adapter/ConverterInput interface: Toslink, CoaxialOutput interface: R/L RCA, Toslink, Coaxial, 3.5mmSignal Sampling Rate: 32-192 KHz,Bit Rate: 16-24 BitOutput Impedance: 16-300 ohmWorking Voltage: 5VNote:1. There is a switch on the volume knob, please turn on the switch before using the DAC.2. Please set the Audio Output to the PCM/LPCM Format.Different batches, the screen printing on the product may be different from the picture, which does not affect.type:BColour:blackMaterial:aluminium alloySize:73 x 84x 28mmPackage Contents:1 x Digital to Analog Audio Converter1 x USB Cable1 x Coaxial Cable1 x Fiber CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.