This Digital to Analog Audio Converter is designed for either home or professional audio switching. It converts Coaxial or Toslink digital audio signals to analog L/R audio. This Converter has many features that enable it to perform in a superior manner. Among those Supports sampling rate at 32, 44.1, 48 and 96 KHz. 24-bit S/PDIF incoming bit stream on left and right channels Provides electromagnetic-noise-free transmission. Easy to install and simple to operate. Material: metal color: black Note: 1. The Reason of cancel the external power adapter and use USB powered. Many devices (e.g. Computer TV DVD) USB ports output stable voltage and current, And filters some bad waves. So the DAC( Digital to Analog audio converter) will works better, And decode will more stable. 2. In addition ,Use USB output power that is more environmentally friendly, And reduce costs, And compatible with all country 3. This item NOT convert Dolby. Input Audio: Coaxial or Toslink digital audio Output Audio: L/R audio Input audio connector: Toslink,1XRCA(Coaxial) Output audio connector: 2XRCA(R/L) Sampling rate: 32, 44.1, 48 and 96 KHz Operating temperature: 0~70 Celsius Operating humidity: 10%~85%RH(no condensation) External power supply: 5V DC/1A Power consumption: 0.5W Dimension: 50 x 40 x 26 mm Weight: 360 g Package Included: 4 x Digital to Analog Audio Converter Adapter 4 x USB Power Cable(58cm length) 4 x 0.5m fiber Optical cable