aoeyoo AY57A Premium Quality Optical SPDIF/Coaxial Digital to RCA L/R Analog Audio Converter with 3.5mm Jack Use the newest 192kHz Digital Audio Receiver & 24-bit 192kHz DAC chipsets. Support sampling rate up to 192KHz. Most products on the market, using older / cheaper chips, can only support sampling rate up to 96KHz, which degrades audio quality. Support RCA L/R output to audio receiver / speakers and 3.5mm output to headphone AT THE SAME TIME without compromising performance. Most products don't have this feature. It doesn't have the notorious hissing sound or static noise problem experienced in other similar products, while digital audio input is idle! Easy to use, just plug and play. USB power option - use USB port to save one AC outlet; you can also use your phone charger to power it.