describe Plug and Play - This DAC converter is equipped with an audio decoding chip and is compatible with Dolby AC-3 DTS 5.1 channel audio. It perfectly solves the problems of speakers and amplifiers and will not cause audio and noise problems such as buzzing, squeaking, and squealing. Enjoy an auditory feast. Digital to Analog Converter - Converts coaxial/toslink/optical audio signals to 2.0 analog L/R 3.5mm audio. Solve the problem of devices (such as for/4) not having 3.5mm headphones and L/R. Volume adjustment - the volume control knob is 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 amplifier. High-quality equipment - built-in high-performance RTOS operating system, supporting DTS/Dolby AC3/LPCM/PCM formats. Supports 32, 44.1, 48, 96 and 192KHz sampling rates; 24-bit S/PDIF input bitstream for left and right channels. Provides electromagnetic noise-free transmission Broad compatibility - perfect match for HDTV and satellite receivers, can be used with PS3, Blu-ray players, HD DVD, home theater systems, AV amplifiers, HD plasmas, TVs and all devices with digital ports Optical or coaxial. Type: Audio adapter/converter Input interface: Toslink, coaxial Output interface: R/L RCA, Toslink, coaxial, 3.5mm Signal sampling rate: 32-192 KHz, Bitrate: 16-24 Bit output impedance: 16-300 Ohmic working voltage: 5V Note: 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 PCM/LPCM format. Different batches, the screen printing on the product may be different from the picture, this does not affect it. Type:A Colour: Black Material: aluminum alloy Dimensions: 73 x 84 x 28mm Package Contents: 1 x Digital to Analog Audio Converter 1 x USB Cable Only the above package contents, other products are not included. Note: Light reflections and different monitors may cause the color of the item in the picture to differ slightly from the actual item. The measurement allowance is +/-1-3cm.